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The first truly significant Big Ten game of 2013 is in the books, and Ohio State, thanks to the return of quarterback Braxton Miller and a stout run defense, found a way to prevail. As a reward, the Buckeyes remain atop the Big Ten power rankings heading into another showdown this week at Northwestern.

It's not much consolation to Wisconsin or its fans, but there might not be a better two-loss team in the FBS than the Badgers, who displayed a lot of fight in Columbus even after top running back Melvin Gordon injured his knee. We've been more impressed with Wisconsin than 4-0 Michigan or 3-1 Nebraska, so we're keeping the Badgers in the No. 3 hole for now.

Iowa makes a major move up the rankings after its impressive win in Minneapolis, while the Gophers take a tumble.

Half of the Big Ten spent Saturday on the couch, so there wasn't much movement in the power rankings.

One last look at last week's rankings.

And away we go ...

1. Ohio State (5-0, 1-0 Big Ten; last week: 1): Welcome back, Mr. Miller. The Ohio State quarterback returned to the field with a bang Saturday night, firing four touchdown passes and completing 17 of 25. Carlos Hyde also seemingly has reclaimed his place atop the running back depth chart, and Ohio State's young defense took a step against Wisconsin's power run game Saturday night. The Buckeyes now must figure out how to replace standout safety Christian Bryant as they face another test this week at Northwestern.

2. Northwestern (4-0, last week: 2): After two uninspiring performances against weak competition, Northwestern knows it must elevate its play significantly against Ohio State in what will be the most anticipated game of the Pat Fitzgerald era. Expect running back Venric Mark to return against the Buckeyes, as Northwestern will need its zone-read game to be in top form to keep pace with Ohio State on the scoreboard.

3. Wisconsin (3-2, 1-1; last week: 3): Credit the Badgers for a strong effort in Columbus despite a shaky start, a disastrous end to the first half and the loss of running back Melvin Gordon to a knee injury. But Wisconsin once again came up just short on the road. Despite another single-digit loss, Wisconsin can take away some positives from Columbus, namely the play of quarterback Joel Stave and wide receiver Jared Abbrederis. But the Badgers, who are off this week, will need some help if they want to return to Indianapolis.

4. Michigan (4-0, last week: 4): No team needed the off week more than Michigan, which had plenty to clean up following near disasters against Akron and Connecticut. Quarterback Devin Gardner's decision-making skills will be under the microscope against Minnesota, and the Wolverines' line play also will be in the spotlight against a Gophers team that has improved up front.

5. Nebraska (3-1, last week: 5): No one wants to hear Bo Pelini talk about execution anymore. It's time for Nebraska's defense to show some improvement, or it will be a long Big Ten season in Lincoln. After an open week, the Blackshirts will face a good test from Nathan Scheelhaase and an Illinois offense that doesn't resemble the unit we saw last season. Quarterback Taylor Martinez's health will be an interesting story line this week.

6: Iowa (4-1, 1-0; last week: 9): We knew Iowa was an improved team, but we needed a little more validation. Kirk Ferentz's crew provided it Saturday with a dominant performance against Minnesota to ruin its rival's homecoming. The offense is significantly better behind quarterback Jake Rudock and running back Mark Weisman, and an opportunistic defense shut down Minnesota's run game and controlled the line of scrimmage. Iowa is minutes away from being undefeated and returns home to play Michigan State with a bunch of momentum.

7. Michigan State (3-1, last week: 7): The Spartans had a familiar to-do list during their open week -- fix the offense. Coach Mark Dantonio is sticking with Connor Cook as his starting quarterback, but Dantonio clearly wants to see more plays made from the signal-caller. Michigan State's offensive line can build off its performance at Notre Dame, but the Spartans need some chunk plays.

8. Penn State (3-1, last week: 8): Bill O'Brien once again has the offense moving, as the Nittany Lions' run game looks strong and freshman quarterback Christian Hackenberg is performing beyond his years. The bigger questions remain on defense, as Penn State rebounded against a woeful Kent State offense but must show it can contain more explosive attacks. The good news is we'll find out as Penn State opens Big Ten play against four strong offenses, starting this week at Indiana.

9. Illinois (3-1, last week: 10): Here come the Illini. The biggest surprise in the Big Ten completed nonleague play at 3-1 and heads to Nebraska with a lot of confidence, particularly on offense. Scheelhaase takes aim at a vulnerable Huskers defense after firing five first-half touchdown passes and finishing with 278 pass yards on 19-of-24. The big question now is, can he follow it up against a major-conference team after struggling against Washington? Illinois already has exceeded last year's wins total.

10. Minnesota (4-1, last week: 6): The Gophers take a tumble after a horrendous performance on homecoming against Iowa. It seems like Minnesota was a product of a weak nonleague schedule, as some of the small problems that surfaced against weaker competition became big problems against Iowa, which dominated the Gophers at the line of scrimmage. Quarterback Philip Nelson struggled mightily and didn't get much help from the run game. After Mitch Leidner provided a spark in Week 4, it will be interesting to see what Jerry Kill does at quarterback going forward.

11. Indiana (2-2, last week: 11): A regrouping week was in order for Indiana after nearly nothing went right against Missouri. Quarterback Nate Sudfeld must rebound from his first real brush with adversity (three interceptions). Indiana's defense faces another balanced attack in Penn State after failing to stop Missouri on the ground or through the air. After sluggish starts in both of its losses, IU needs a strong first quarter against the Lions.

12. Purdue (1-4, 0-1; last week: 12): The misery continues for Darrell Hazell's crew, but there's a reason to watch the Boilers for the rest of the season. The Danny Etling era is underway, as Hazell opted to burn the quarterback's redshirt after Rob Henry continued to struggle. Etling showed some promise in Purdue's loss to Northern Illinois, as the offense racked up 524 yards. An open week comes at a good time for the beleaguered Boilers and their young quarterback.

The top half of the Power Rankings remains exactly the same, but some interesting story lines are starting to develop.

Is Ohio State or Michigan the Big Ten's best team? Michigan made its case Saturday night against Notre Dame, while Ohio State's bigger tests await in Weeks 5 and 6 (Wisconsin and Northwestern). For now, we're keeping the Buckeyes at No. 1, but we'll need to see a strong performance this week on the road against Cal's high-powered offense.

Northwestern and Wisconsin held steady, and both Nebraska and Penn State looked better in Week 2. Illinois is the big mover after Saturday's dominant win against Cincinnati, while Indiana, Michigan State and Iowa fall. There's some separation after the top six, and Nos. 7-9 really could appear in any order.

These are consistent with our rankings in the ESPN.com power poll.

Here's one last look at the previous Big Ten rankings.

To the rundown …

1. Ohio State (2-0, last week: 1): Braxton Miller's knee injury created some tense moments in Columbus, but Ohio State fans settled down and settled in to the smooth sounds of Kenny G (Guiton, that is). One of the nation's best backup quarterbacks torched San Diego State for three touchdowns as a Buckeyes team that sleepwalked through the second half in Week 1 took charge from the get-go. Ohio State's young defense will be tested much more this week by the "Bear Raid" offense at Cal.

2. Michigan (2-0, last week: 2): Debate the Notre Dame-Michigan rivalry all you want, but it mattered a lot for quarterback Devin Gardner and the Wolverines. Gardner proved he's a big-game quarterback and triggered an impressive offensive performance against Notre Dame's physical defense. Although Michigan's defense had some issues, it made timely plays against the Irish. The Wolverines have the look of a BCS bowl team and possibly a Big Ten champion.

3. Northwestern (2-0, last week: 3): Week 1 was all about survival for Northwestern. Saturday night, the Wildcats showed why they should contend for the Legends Division title this season. Quarterbacks Kain Colter and Trevor Siemian had their way with Syracuse's defense, and wideout Tony Jones had a huge night as Northwestern easily improved to 2-0. The Wildcats should be 4-0 in three weeks when Ohio State visits Evanston, and star running back Venric Mark should be healthy by then.

4. Wisconsin (2-0, last week: 4): The run game has been dominant, the defense suffocating and the competition level horrendous. What do we make of these Badgers after two not surprisingly dominant performances against lowly Massachusetts and Tennessee Tech? Wisconsin deserves credit for handling its business with few if any mistakes, recording back-to-back shutouts to open a season for the first time since 1958. Quarterback Joel Stave looks comfortable. But the competition goes up -- way, way up -- this week at Arizona State.

5. Nebraska (2-0, last week: 5): The Huskers defense doesn't deserve the "Blackshirts" label quite yet, but at least the unit avoided less-flattering terms for a week. Cornerbacks Stanley Jean-Baptiste and Ciante Evans set the tone for a rebound performance with pick-sixes in the first quarter, and junior-college transfer Randy Gregory applied pressure all game. The defense needs a better performance this week against UCLA, potentially the only team that can beat the Huskers during the first two months of the season.

6. Penn State (2-0, last week: 6): After a rough start, freshman quarterback Christian Hackenberg settled down in his Beaver Stadium debut. He also got a ton of help from the run game, which had struggled in the opener but broke out for 251 yards and five touchdowns. Tackle DaQuan Jones triggered a suffocating Lions defense, which will be tested much more this week when Blake Bortles and Central Florida visit Happy Valley.

7. Minnesota (2-0, last week: 8): Although Aggie Vision was the real highlight Saturday night, Minnesota provided a few of its own in an easy win against New Mexico State. The Gophers continue to find creative ways to score, adding a special teams touchdown and a defensive touchdown in a 44-21 romp. Despite being short-handed at running back, Minnesota got the ground game going behind Rodrick Williams (148 yards, 1 TD), David Cobb (56 yards, 1 TD) and quarterback Philip Nelson (122 rush yards, 1 TD). The Gophers have another tuneup this week before their first real test Sept. 21 against San Jose State.

8. Michigan State (2-0, last week: 7): Can Shilique Calhoun play quarterback? The sophomore defensive end has been Michigan State's best offensive weapon in the first two games, scoring one more touchdown than the entire Spartans offense. Michigan State's defense has added a dynamic playmaking element early this season. Unfortunately, the problems on offense only seem to be worsening and the quarterback situation is anyone's guess right now.

9. Illinois (2-0, last week: 11): Surprise, surprise, the Illini are unquestionably on the rise. Few saw it coming, but Illinois walloped Cincinnati behind another impressive performance by quarterback Nathan Scheelhaase and the offense. One of the nation's worst offenses has surged under coordinator Bill Cubit, scoring 87 points in the first two games. Linebacker Mason Monheim and the defense rebounded nicely after a shaky Week 1 effort. Can the Illini pull off another upset this week against Washington at Chicago's Soldier Field?

11. Iowa (1-1, last week: 10): Some Iowa fans undoubtedly felt better about their team after last week's loss to Northern Illinois than Saturday's win against FCS Missouri State. The Hawkeyes had just seven points through the first 37 minutes before Mark Weisman (180 rush yards, 2 TDs) took over down the stretch. Quarterback Jake Rudock showed good mobility but also threw a pick-six. Iowa faces a must-win this week as it hits the road to face rival Iowa State.

12. Purdue (1-1, last week: 12): The Boilers got a win Saturday, but they won't win many more if they don't clean up their problems on offense. If Purdue can't punch the ball into the end zone against Indiana State from inside the 5-yard line, what's going to happen against Big Ten defenses? Defensive tackle Bruce Gaston had a big day, but the Boilers need many others to elevate their play as Notre Dame visits Ross-Ade Stadium this week.

Week 2 didn't provide a lot of enticing matchups, but it did get us dreaming a little bit.

Michigan's impressive takedown of Notre Dame moved the Wolverines up near the edge of the top 10 in the polls and gave the Big Ten another national title contender alongside Ohio State. But those aren't the only teams looking good right now. If league teams can survive some of their nonconference challenges this weekend, we could have some serious heavyweight showdowns on tap in the coming weeks. Would any of these interest you?

5-0 Michigan at 5-0 Penn State on Oct. 12? It could happen, with the Wolverines playing Akron, UConn and Minnesota next, while the Nittany Lions have UCF, Kent State and Indiana.
5-0 Ohio State at 4-0 Northwestern on Oct. 5? The Wildcats have looked great in beating a pair of AQ teams -- Cal and Syracuse -- by double digits in the first two weeks. They've got Western Michigan and Maine left before gearing up for the Buckeyes. Ohio State, of course, still has to get past Wisconsin on Sept. 28 in what should be another high-stakes duel. But the game against the Badgers is in Columbus.
8-0 Nebraska at 8-0 Michigan on Nov. 9? This is far from guaranteed, as the Huskers have a tough matchup with UCLA this weekend, after which comes some pretty easy sledding until November. Michigan would also have to survive road trips to Penn State and Michigan State. But both teams will likely be favored in each game leading up to Nov. 9.
11-0 Michigan at 11-0 Ohio State on Nov. 30, followed by a rematch the following weekend? Like I said, we're dreaming.

What makes daydreaming about these games even more fun is the realization that none of them should turn into defensive slogs (weather permitting, of course). The five current ranked Big Ten teams can all really score, as each one is averaging at least 41 points per game through two weeks. Sure, the competition has yet to really stiffen, but we know that Nebraska's offense is for real, that Devin Gardner has completely changed Michigan's attack and that Wisconsin can run the ball with the best of them. Northwestern has scored 92 points against a pair of AQ teams and has gotten almost nothing from Venric Mark. Carlos Hyde hasn't played a down for Ohio State, while Braxton Miller has yet to play a full game and Dontre Wilson is still learning.

Throw in Indiana's passing game, Illinois' vastly improved offense, the potential for Penn State and Christian Hackenberg under Bill O'Brien's play calling and even Minnesota's increased playmaking skills, and points could be coming in waves this fall.

Michigan State fans just got sick.

Take that and rewind:

Team of the week: With apologies to Illinois, which registered a critic-silencing win over Cincinnati, Michigan grabs the honor this week after its 41-30 win over Notre Dame. The Wolverines got to make all the chicken jokes they desired by shining bright under the Big House lights. And while Irish haters want to use that result solely as an excuse to bash Notre Dame, the fact is Michigan scored 41 points on a defense full of future pros.

Worst hangover: Buzz swirled around Indiana this offseason and grew louder when the Hoosiers rang up 73 points in their opener versus Indiana State. That's why it was so deflating for Kevin Wilson's team to lose 41-35 at home to Navy. The Midshipmen ran for 444 yards on 70 (!) rushing attempts and never once punted. With an underrated Bowling Green squad up next, followed by Missouri, Penn State and the two Michigan schools, the Hoosiers need to get up off the mat quickly.

Fun with numbers (via ESPN Stats & Info): Wisconsin is one of only three teams in the country that has yet to allow a point and the only defense that has done so through two games. This week's opponent, Arizona State, has also yet to give up a point but has played only Sacramento State. The Badgers also lead the FBS in yardage margin, outgaining opponents by 444 yards per game. Playing cupcakes is good for your stats. ... Northwestern, deadly efficient with both quarterbacks versus Syracuse, has the league's highest QBR score and is 14th nationally. Michigan is right behind at No. 15. ... Penn State is dead last in the FBS in third-down conversion percentage (2-for-26) but is 4-for-4 on fourth downs. ... Purdue is in the bottom 10 nationally in yards per game, yards per play, QBR, points per game and red zone efficiency. That looks even worse when you consider that the Boilers' two opponents -- Cincinnati and Indiana State -- served up a combined 118 points in their other, non-Purdue matchups. ... Illinois' Nathan Scheelhaase has accounted for 73.5 percent of his team's offense, by far the highest percentage in the Big Ten.

Big Man on Campus (Offense): Notre Dame had no solution for Michigan wide receiver Jeremy Gallon. The senior had eight catches for a career-high 182 yards and three touchdowns, averaging 23 yards per reception. “He’s like a little bulldog,” Wolverines quarterback Devin Gardner said.

Big Man on Campus (Defense): Michigan State defensive end Shilique Calhoun was named the Walter Camp national defensive player of the week after he scored two touchdowns, one on a fumble return and another on a pick-six. Calhoun now has three scores in his first two games. "He's our running back of the defense, I guess," defensive coordinator Pat Narduzzi said. "Just hand it off to him, let him go."

Big Man on Campus (Special teams): Minnesota's Marcus Jones returned a punt 65 yards for a touchdown late in the first half to help break open the game against New Mexico State. It was sweet revenge for Jones, who got hammered after signaling for a fair catch earlier in the game. He now has scored on a kickoff return and a punt return in his first two games of the year.

Best play: Purdue pulled this off on the opening kickoff versus Indiana State. That was one of the few highlights for the Boilers, who might have lost without that special-teams strike.

Strangest moment: Week 2 was full of them, from Michigan's quarterback wearing the Old 98, to Eminem's halftime-interview-as-performance-art to Tom Izzo bribing Michigan State students to evacuate Spartan Stadium during a thunderstorm by promising to sit with them later (which he did).

But the best theater of the absurd happened in Las Cruces, N.M., where Minnesota played in front of an announced "crowd" of just over 16,400 at New Mexico State. The game was broadcast by something called Aggie Vision, which conveyed the look and feel of a 1980s high school game tape. Everything about the game was as non-big-time as a Big Ten team could find. Week 2 was supposed to be when Minnesota played at North Carolina, but the Gophers paid $800,000 to get out of that road trip. They chose instead to put themselves in the Area 51 of college football. At least they won.

Looking ahead: It's the best week of the nonconference season for the Big Ten, with three ranked opponents on the schedule: No. 16 UCLA at Nebraska, No. 19 Washington versus Illinois in Chicago, and No. 21 Notre Dame at Purdue. Plus, Wisconsin goes to Arizona State, Ohio State travels out to Cal, Iowa plays rival Iowa State and Penn State faces a dangerous UCF squad.

Iowa's season opener against Northern Illinois could be just a blip on the Week 1 national radar, but the game's impact for the Hawkeyes can't be minimized.

Kirk Ferentz's crew comes off of its first losing regular season since 2000 and enters the fall with several glaring question marks, including quarterback. A win against a Northern Illinois program that reached the Orange Bowl last season, has won 23 games the past two seasons and is led by fringe Heisman Trophy candidate Jordan Lynch would boost confidence in Iowa, both inside and outside the program. A loss to the Huskies -- especially in blowout fashion -- could set the course for another lost season.

As The (Cedar Rapids) Gazette's Mike Hlas writes, the Northern Illinois opener is a perception-maker for Iowa.

For the Hawkeyes to restore some luster to their national image, beating Northern Illinois on Aug. 31 would be a good first step. A loss, though, would bring out a lot of sharp verbal and written pitchforks.

NIU is undoubtedly the perception-making game for Iowa this season. What about the other Big Ten teams? I took a look at potential perception-makers around the conference.

I'm a firm believer that perception is shaped early on, so for the purpose of this post, I only considered games in the first six weeks of the season (weekend of Aug. 31-weekend of Oct. 5).

Here are the perception-makers around the Big Ten …

ILLINOIS: Sept. 7 vs. Cincinnati

Tim Beckman's Illini have to show obvious improvement early on to avoid a here-we-go-again mentality in Champaign. Although Illinois must be careful with FCS Southern Illinois in the opener, it has a great opportunity to show things will be different as it hosts Cincinnati, a 10-win squad last season, in Week 2. Poor performances against Cincinnati and the following week against Washington in Chicago would brand Illinois a lost cause once again.

INDIANA: Sept. 21 vs. Missouri

It's a close call between the Missouri game and a Week 3 home contest against Bowling Green, which was a better team than the Tigers last season. But beating Bowling Green likely won't boost Indiana's perception, especially if the Hoosiers fall short the following week against an SEC foe. If Indiana completes non-league play at 4-0, ending with a victory against Missouri, it will be viewed as a potential surprise team entering Big Ten play.

IOWA: Aug. 31 vs. Northern Illinois

See above.

MICHIGAN: Sept. 7 vs. Notre Dame

The Wolverines have beaten Notre Dame in recent years without getting much of a perception boost, but the Irish are coming off of a perfect regular season and a national runner-up finish. This is a big moment for Wolverines quarterback Devin Gardner, who looks for a signature win early in his first full season as a starter. Michigan remains a talented but young team that will need to grow up in a hurry to contend for big things in 2013. The Notre Dame game provides a great chance to do so.

MICHIGAN STATE: Sept. 21 at Notre Dame

The Spartans look for a bounce-back season and need a validating win early on to boost their perception after falling short of expectations in 2012. Notre Dame provides by far the biggest challenge for Michigan State in non-league play, and Mark Dantonio's team tries to end a two-game slide against the Irish after winning three of the previous four under Dantonio. It's a huge opportunity for quarterback [fill in the blank] and a Spartans offense that managed only three points and 237 yards against Notre Dame last season.

MINNESOTA: Sept. 21 vs. San Jose State

The Gophers' non-league schedule is mostly uninspiring, but keep an eye on this Week 4 showdown with San Jose State. The Spartans won 11 games last season under Mike MacIntyre, now Colorado's coach, and boast one of the nation's top quarterbacks in David Fales, who finished third in the FBS in passing efficiency (170.8 rating). Although an Oct. 5 win at Michigan would transform Minnesota's perception, the Gophers must first get past San Jose State.

NEBRASKA: Sept. 14 vs. UCLA

This is one of the easiest picks on the list. Not only is UCLA by far Nebraska's biggest non-league test, but the Bruins appear to be the Huskers' most formidable challenge in the first two months of the season. A Nebraska win would help validate the impressive record the Huskers likely will have when the calendar flips to November. Another loss to the Bruins, who edged Nebraska last September at the Rose Bowl, would raise doubts about the Huskers' legitimacy even if they go on to pile up wins.

NORTHWESTERN: Oct. 5 vs. Ohio State

The Wildcats play two major-conference foes (Cal, Syracuse) in non-league play, but neither game has real perception-making potential. Besides, Northwestern has handled itself well in non-league play in recent years. The Ohio State game likely will be the most-anticipated home game for Northwestern in the Pat Fitzgerald era. Northwestern can transform its perception with a win, while a loss would reinforce the Wildcats as a good program that can't really beat the Big Ten's elite.

OHIO STATE: Sept. 28 vs. Wisconsin

The Buckeyes' non-league slate is pretty uninspiring, and while San Diego State (Week 2, home) or Cal (Week 3, road) could provide a few clues about Urban Meyer's squad, Ohio State will be heavy favorites in both contests. If Ohio State meets its preseason perception, it will handle Wisconsin at home fairly easily in Week 5. A shaky showing or a loss certainly would change the way people feel about the Buckeyes' chances to get to Pasadena, both for the Rose Bowl and for the BCS title game.

PENN STATE: Aug. 31 vs. Syracuse (at East Rutherford, N.J.)

It's a little dangerous to pick the opener for Penn State, which changed its perception during the course of last season after stumbling in its debut against Ohio. But there are new questions about Bill O'Brien's team, particularly at the quarterback spot as Christian Hackenberg or Tyler Ferguson takes control. Penn State faces another transitioning team in Syracuse at a neutral site. A strong performance could propel Penn State to a 5-0 start before Michigan visits Happy Valley on Oct. 12.

PURDUE: Aug. 31 at Cincinnati

The Boilers are one of the Big Ten's mystery teams as a new staff takes control. Purdue faces one of the nation's tougher non-league slates, going up against two BCS bowl teams from 2012 (Notre Dame, Northern Illinois) and another that won 10 games (Cincinnati). A victory at Nippert Stadium in Darrell Hazell's Boiler debut would give Purdue a nice confidence boost and force folks to take notice of the Boilers heading into their Week 3 home showdown against the rival Irish.

WISCONSIN: Sept. 14 at Arizona State

We'll learn a lot about Gary Andersen's Badgers in the first month of the season as they play two extremely challenging road games against Arizona State and Ohio State. Big Ten teams struggle mightily in Pac-12 venues, and Wisconsin's shaky secondary will be tested by quarterback Taylor Kelly and the high-powered Sun Devils offense. A win would give Wisconsin some confidence as it faces untested Ohio State in Week 5, while a loss could signal trouble ahead.

Good news: We are just 100 days away from the start of college football.

To mark the occasion, we're pulling out a checklist today of things that Big Ten teams need to accomplish between now and the start of the season. It's not quite "The Final Countdown" (cue GOB Bluth), but we are inching ever so close to kickoff. Here's what needs to happen in the next 100 days:

1. Identify a starting quarterback at Iowa, Indiana, Michigan State, Penn State, Purdue and Wisconsin: It seems as if there are an unusually high number of Big Ten teams who don't know for sure who their starting quarterbacks will be in the fall. (You could also add Illinois and Minnesota to this list, though it appears likely that Nathan Scheelhaase and Philip Nelson, respectively, would have to lose the job in the summer.) Iowa had a three-man race this spring that will probably come down to Jake Rudock and Cody Sokol in training camp. There's very little separation between Cameron Coffman, Nate Sudfeld and Tre Roberson at Indiana. Connor Cook continues to breathe down the neck of incumbent Andrew Maxwell at Michigan State. Tyler Ferguson claimed the starting job at Penn State during the spring, prompting Steven Bench to transfer, but highly touted recruit Christian Hackenberg will push for immediate time. Purdue will likely decide between senior Rob Henry and true freshman Danny Etling. Joel Stave and Curt Phillips separated themselves from the Wisconsin QB derby this spring, while incoming junior college transfer Tanner McEvoy could expand the race this summer. All these situations should work themselves out in August, but no team wants to be dealing with an unsettled quarterback competition once the season starts.

2. Solidify the defensive front sevens at Nebraska and Ohio State: The Huskers and Buckeyes stand out as two of the top Big Ten contenders in 2013, but both have serious questions at defensive line and linebacker. The issue is more dire at Nebraska, which struggled there last year and is replacing all but one starter from 2012. Summer arrivals, including junior college star Randy Gregory, could make an immediate impact, and players coming back from injury such as linebacker Zaire Anderson and defensive tackle Thad Randle will need to play up to potential. Ohio State is less concerned about its defense after the spring performance of defensive ends Noah Spence and Adolphus Washington, but linebacker Ryan Shazier is still the only returning starter in the front seven. Curtis Grant must finally live up to his talent to provide help to Shazier, and someone must assume John Simon's leadership role.

3. Locate the next great receivers: A few Big Ten teams, such as Nebraska, Penn State and Indiana, don't have to worry too much about who will catch the ball this year. But just about everybody else needs to find playmakers in the passing game. The top of that list includes Iowa, which couldn't generate a downfield passing attack last year; Illinois, which needs receivers to make new coordinator Bill Cubit's spread system work; Michigan State, whose young wideouts must improve on last year's shaky performance; Minnesota, which doesn't have many proven weapons to surround Nelson; and Wisconsin, which still must find a complement to Jared Abbrederis. Ohio State coach Urban Meyer is hoping some incoming freshmen augment a very thin receiver group, while Michigan needs to replace the production of Junior Hemingway and Roy Roundtree. Purdue and Northwestern have lots of speedy options but could use the emergence of a true No. 1 target. Receiver was a weak spot as a whole in the Big Ten in 2012, and hopefully some players will improve through offseason voluntary passing drills.

4. Strengthen the running game at Michigan, Michigan State, Indiana and elsewhere: It's a cliché to say that you have to run the ball to win, but in the case of the Big Ten, that's always been true. That's why it's so vital for the Wolverines and Spartans -- who both expect to contend in the Legends Division -- to find answers in their rushing attacks. Michigan is replacing its entire starting interior offensive line after struggling to get a running game going outside of Denard Robinson last year. Fitz Toussaint is hoping to bounce back from a disappointing season and a leg injury, while hotshot freshman Derrick Green could get lots of carries right away. Michigan State's efforts to replace workhorse extraordinaire Le'Veon Bell this spring ended up with converted linebacker Riley Bullough emerging as the top back in a mediocre field. Three incoming freshmen will compete for time right away this summer. Indiana coach Kevin Wilson put a heavy emphasis on the running game this spring, hoping for more balance after his team led the league in passing and finished last in rushing last season. Iowa has depth for once at running back but needs to stay healthy there, as the ground game is the key to the Hawkeyes' entire offensive philosophy. Nebraska also can't afford injuries, as Ameer Abdullah and Imani Cross are the lone backs with any experience. Illinois averaged just 3.5 yards per carry as a team last year, a number that must improve. And while Purdue loved what it saw from Akeem Hunt this spring, he still must prove he can be an every-down back after attempting only 42 carries last season.

5. Mesh with new coaches: Wisconsin's Gary Andersen and Purdue's Darrell Hazell are the fresh faces among head coaches in the league, and while they did a great job of connecting with their players this spring, they still need to get their new systems fully in place. The Badgers will be using some new, 3-4 looks on defense, while Hazell wants a more physical and disciplined team than we've seen from the Boilermakers of late. Michigan State has a new offensive playcaller in Dave Warner, while Cubit was one of many staff changes at Illinois. Penn State's John Butler takes over from Ted Roof as the Lions' defensive coordinator. With only 15 spring practices so far to implement their styles, those new coaches have had to rely on a lot of classroom time and players learning on their own. That will have to continue this summer during voluntary workouts and then will intensify when preseason practice begins. For new coaches, it's a race against the calendar -- and the calendar says there are only 100 days until kickoff.

Spring practice is under way in the Big Ten, so let's take a look at what's on tap for the six teams in the Leaders Division.

ILLINOIS

Spring start: March 5

Spring game: April 12

What to watch:

1. Coaching staff makeover: Illinois players are used to coaching changes, and Tim Beckman's staff received a significant overhaul during the winter as five assistants departed the program (four voluntarily). The biggest change comes at offensive coordinator, as former Western Michigan head coach Bill Cubit takes over. Cubit has to implement his system and identify more playmakers with a unit that finished last in the Big Ten in both scoring and total offense last season.

2. Lines in limbo: The Illini not only lost significant pieces on both the offensive and defensive lines, but they have new position coaches at both spots as well. Defensive line has been Illinois' strongest spot, but the team must replace two future NFLers in Michael Buchanan and Akeem Spence. Glenn Foster is also gone, so the front four will have a very different look. The offensive line struggled mightily in 2012 and needs young players like Michael Heitz and Ted Karras to take steps this spring.

3. Getting healthy: Illinois lost so many starters to injury in 2012 that it became difficult to get an accurate gauge on what Beckman could do with a healthy roster. Although linebacker Jonathan Brown and receiver Darius Millines will be limited this spring, the rest of the team is ready to go and Illinois added several potential big contributors from the junior-college ranks. If Illinois has any chance of taking a major step in 2013, its best players must stay on the field this spring and allow the coaches a chance to evaluate and scheme for the season.

INDIANA

Spring start: March 2

Spring game: April 13

What to watch:

1. Quarterback cluster: While some Big Ten teams (Penn State, Purdue) have hardly any experience at quarterback, Indiana has three signal-callers who have logged significant field time. Tre Roberson, who started the 2012 season before suffering a broken leg in Week 2, returns this spring, and it will be interesting to see how he looks and whether he outperforms Cameron Coffman and Nate Sudfeld. Coffman started the final 10 games last fall and passed for 2,734 yards and 15 touchdowns, while Sudfield added 632 pass yards and seven scoring strikes. Indiana's quarterback depth is a good problem to have, but it would be good to see some separation this spring.

2. Defensive leadership: Fielding a Big Ten-level defense remains Indiana's top priority, and the Hoosiers need leaders to develop this spring. Top linemen Adam Replogle and Larry Black Jr. depart, and Indiana needs to build depth up front after allowing a league-worst 231.3 rush yards per game in 2012. Linebacker is another spot IU must upgrade, and David Cooper should be ready to take the reins after recording 86 tackles in 12 starts a year ago. Like Illinois, Indiana also welcomes several junior-college defenders, including tackle Jordan Heiderman.

3. Secondary surge: All the question marks in Indiana's defensive front seven make it even more important for the secondary to make strides this spring. The Hoosiers have no shortage of experience in the back four with players like Greg Heban, Mark Murphy, Brian Williams (12 starts last season) and Antonio Marshall (started final seven games). There's potential for the secondary to be a strength for IU in 2013, but the group must make more plays after recording a league-low seven interceptions last fall.

OHIO STATE

Spring start: March 5

Spring game: April 13 (at Paul Brown Stadium, Cincinnati)

What to watch:

1. Taking a pass: The highest-scoring offense in the Big Ten returns every starter but two, and all that experience, talent and familiarity with the spread attack heading into Urban Meyer's second season with the Buckeyes figures to make them even more dangerous. The key will be how much more efficient Braxton Miller can become as a passer.

2. Getting defensive: For all the pieces the offense retains, the defense is a completely different story heading into spring camp. The Buckeyes have to replace the entire defensive line after losing three seniors and junior Johnathan Hankins to the draft, two starting linebackers are gone and the graduation of cornerback Travis Howard leaves an additional hole in the safety. There will be no shortage of competition for first-team reps.

3. Looking for leaders: Meyer and the senior class that has since departed quickly forged a deep bond, and he’s gone out of his way to praise those players' leadership as integral in the unbeaten season that started his tenure with the Buckeyes. Now he needs a new wave of emotional speakers and relentless workers to take the torch from the likes of John Simon and Zach Boren, and Meyer will be making a point to identify his best candidates over the 15 workouts leading into the summer.

-- Austin Ward, BuckeyeNation

PENN STATE

Spring start: March 18

Spring game: April 20

What to watch:

1. Quarterback competition: With the departure of fifth-year senior Matt McGloin, quarterback is now the biggest question mark on this team. Sophomore Steven Bench has a head start and will compete against juco early enrollee Tyler Ferguson. Christian Hackenberg won't join the team until summer. Can this no-huddle offense be as effective?

2. Replacing LBs Michael Mauti and Gerald Hodges: Mike Hull, who usually played inside, will have to make some adjustments as one of the expected replacements for the All-Big Ten linebacker tandem. The other spot is up for grabs, and fans should expect to see a battle between Ben Kline and Nyeem Wartman.

3. New faces at WR, TE: Redshirt freshman Eugene Lewis, the headliner of PSU's 2012 class, could challenge Brandon Moseby-Felder as the No. 2 WR target. Adam Breneman, the No. 1 tight-end recruit in the country, is also hoping to be recovered from a torn anterior cruciate ligament in time for the Blue-White Game. Both could be stars down the road for PSU.

-- Josh Moyer, NittanyNation

PURDUE

Spring start: March 18

Spring game: April 12

What to watch:

1. Behind these Hazell eyes: Yes, I'll justifiably take the abuse for the Kelly Clarkson reference, but new Purdue coach Darrell Hazell has his first chance to evaluate his team on the field this spring. Hazell brings a completely new coaching staff and a new approach to Purdue, which fell short of expectations in 2012 and has significant questions on both sides of the ball. He seems to be getting good buy-in from the players so far, but it'll be interesting to see how things progress during the 15 workouts this spring.

2. Quarterback race: If you like mysteries, you'll enjoy Purdue's quarterback competition this spring. The combination of a new coaching staff and unproven but talented candidates makes the race virtually impossible to predict. Hazell and new offensive coordinator John Shoop will study redshirt freshman Austin Appleby, who could have a slight edge to win the job, along with redshirt freshman Bilal Marshall and early enrollee Danny Etling, a decorated recruit. Don't forget about Rob Henry, who started in 2010 and would have been the top quarterback in 2011 if not for an ACL injury weeks before the season.

3. Short stopper: Purdue has to find a replacement for standout defensive tackle Kawann Short, the centerpiece of the defensive line the past few seasons. Bruce Gaston Jr. will continue to occupy the other top tackle spot, but there will be plenty of competition to join him in the starting lineup. Purdue's defensive line underachieved in 2012, and while Gaston and ends Ryan Russell and Ryan Isaac all return, the Boilers will really miss Short's production if they don't build more depth up the middle.

WISCONSIN

Spring start: March 9

Spring game: April 20

What to watch:

1. New era dawns: Consistency is the norm at Wisconsin, but players will have to adjust to a dramatically different coaching staff for the second consecutive season. This time, it includes a new leading man in Gary Andersen, who gets his first chance to work with the players on the practice field. Andersen doesn't plan to overhaul the schemes, but he and his coaches will put their spin on things and see what works. He'll also bring a different personality to practice but one that athletic director Barry Alvarez thinks will fit the program's culture.

2. Intrigue at quarterback: Arguably no team in America has a more interesting quarterback race than the Badgers do this spring. They have three players with starting experience -- Joel Stave, Curt Phillips and Danny O'Brien -- plus a talented redshirt freshman (Bart Houston) who arrived as a decorated recruit and a junior-college addition (Tanner McEvoy) brought in by the new coaches. Add in a new system under coordinator Andy Ludwig, and it's anyone's guess who will separate himself this spring. Be sure to tune in.

3. Secondary in the spotlight: The Badgers lose three of four starters in the secondary from the 2012 squad, including top cornerbacks Devin Smith and Marcus Cromartie. The new staff is aware of the numbers issue and signed junior-college All-America Donnell Vercher earlier this month. Other players who will compete for starting spots include cornerbacks Darius Hillary and Peniel Jean and safeties Michael Trotter and Michael Caputo. Wisconsin hopes to have some answers in the back four by the end of the spring.

The Big Ten classes are signed and sealed. You can see ESPN's final class rankings as well as grades for all the Big Ten teams .

As we put a bow on national signing day 2013, let's take a look at some superlatives ...

Biggest winner: Ohio State. The Buckeyes took a great class and made it even better with the additions of elite safety prospect Vonn Bell and four-star receiver prospect James Clark. They also held onto running back recruit Ezekiel Elliott. Plucking Bell out of SEC country made a significant statement, as Ohio State secured the nation's No. 3 class and the best in the Big Ten. Although other Big Ten programs secured strong classes -- Michigan, Nebraska, Penn State, Wisconsin, Michigan State -- Ohio State made the most headlines Wednesday.

Best closer: Ohio State co-defensive coordinator/safeties coach Everett Withers. Although Buckeyes head coach Urban Meyer is unquestionably one of the nation's top closers, Withers merits a mention here after steering Bell to sign with the Scarlet and Gray. "I've seen some really good efforts," Meyer said Wednesday. "Everett Withers from start to finish, his effort on Vonn Bell, as good as I've ever seen." Bell's high school coach called Withers the "most proficient and professional recruiter we've ever dealt with," according to The (Cleveland) Plain Dealer. Withers played a major role in Ohio State securing five defensive backs ranked in the top 50 by ESPN Recruiting.

Biggest surprise: Indiana and Penn State. The Hoosiers have reached only one bowl game since the 1993 season and boast just five wins the past two seasons, but things are looking up in Bloomington. Kevin Wilson and his staff signed what appears to be a very solid recruiting class, especially on the defensive side, where IU has struggled for years. The Hoosiers signed two four-star defensive linemen from within the state -- Darius Latham and David Kenney III -- and bolstered the secondary with Rashard Fant and others. Penn State overcame NCAA scholarship sanctions and a multiyear bowl ban to sign the nation's No. 24 class, headlined by quarterback Christian Hackenberg, rated by ESPN Recruiting as the nation's top pocket passer.

Who flipped/biggest loss: The only notable intra-league flip on signing day -- and it wasn't a major surprise -- saw linebacker Reggie Spearman, a one-time Illinois commit, signing with Iowa. Ohio State (Taivon Jacobs) and Wisconsin (Marcus Ball) lost commits to Maryland and Arizona State, respectively, while Minnesota made a late flip with junior college linebacker De'Vondre Campbell, who was expected to sign with Kansas State. But for the most part, Big Ten teams played good defense on signing day.

The 2012 college football season is barely on ice and we're already heating up for the 2013 campaign with a way-too-early version of the Big Ten power rankings. This is a snapshot of how the league looks at this point in time, not knowing all the personnel/coaching changes that will be in place for next season. As a reminder, these can and will change during the next eight months.

Ohio State is on top, and quite frankly, the Buckeyes are head and shoulders above the rest of the league. Other teams such as Northwestern, Nebraska, Wisconsin and Michigan certainly belong in the league's lead pack, while Michigan State and Penn State both have talent as well as question marks. We don't see a whole lot separating Nos. 2-6.

Here we go ...

1. Ohio State: The Buckeyes made the most of their sanctioned season, running the table to post just the sixth unbeaten, untied season in team history. Urban Meyer's crew now takes aim at a Big Ten title and perhaps even a national title, its first since 2002. Junior quarterback Braxton Miller leads a potentially explosive offense, but Ohio State needs its young defenders to grow up in a hurry as there are depth and experience questions on that side of the ball.

2. Northwestern: The Wildcats won 10 games in 2012 with a young team most projected to win no more than seven. Northwestern returns a very strong nucleus, led by running back Venric Mark and quarterback Kain Colter, and loses only a few key seniors. Most of the Wildcats' talent can be found in their younger classes. The schedule gets tougher in 2013 -- Northwestern opens Big Ten play with Ohio State and Wisconsin -- but the Wildcats should be a major factor in the Legends Division if they can shore up their offensive line and continue to make strides on defense.

3. Nebraska: There's no doubt Nebraska will have one of the nation’s top offenses in 2013. Fourth-year starter Taylor Martinez returns at quarterback and has the Big Ten's largest arsenal of weapons at his disposal. The big concerns are on defense after Nebraska hemorrhaged points and yards in its four losses this past season and loses a group of seniors. Bo Pelini needs to get his defense back on track and hope the offense can limit turnovers, a huge problem throughout this season.

4. Wisconsin: Gary Andersen hardly inherits a bare cupboard in Madison. His predecessor, Bret Bielema, actually pointed to the 2013 team as potentially his best with the Badgers. The coaching transition could create some speed bumps, but Wisconsin returns two dynamic running backs in James White and Melvin Gordon, multiple quarterbacks with experience and a good defensive front seven led by Chris Borland. There are concerns in the secondary (three starters gone) and at wide receiver (not enough playmakers), but Wisconsin should push Ohio State in the Leaders Division.

5. Michigan: The Denard Robinson era is over and Michigan needs offensive playmakers to replace its record-setting quarterback and surround new signal-caller Devin Gardner. A bigger concern, though, is an offensive line that struggled at times in 2012 and must replace most of its starting lineup. Coach Brady Hoke should see some of his strong early recruiting efforts pay off in Year 3, although Michigan might not have the depth to challenge for a league title until 2014. Linebacker Jake Ryan leads a defense that has improved the past two seasons but must measure up to elite competition.

6. Michigan State: Pat Narduzzi's defense should once again be one of the nation's best, especially with All-Big Ten standout Max Bullough once again leading the unit at middle linebacker. But the NFL departures of Le'Veon Bell and Dion Sims could hamper an offense that had no other consistent weapons in 2012. The schedule definitely favors MSU, but how will the Spartans score points? MSU's quarterback competition between Connor Cook and Andrew Maxwell will be one of the top storylines of spring practice.

7. Penn State: Bill O'Brien had a lot to do with Penn State's success in 2012, but so did a senior class featuring several NFL players on defense who certainly will be missed. O'Brien's next challenge is developing a capable quarterback, whether it's Steven Bench, junior college arrival Tyler Ferguson or, just maybe, heralded incoming freshman Christian Hackenberg. Penn State could feel the sting of the sanctions more from a depth standpoint in 2013, but O'Brien's Lions have defied the odds so far.

8. Minnesota: The Gophers doubled their win total in Jerry Kill’s second season, and Kill's track record at previous stops suggests another boost could be on the way in Year 3. Quarterback Philip Nelson looked good in the bowl game after some late-season struggles, but Minnesota still needs more weapons to develop around him as well as continued progress from the offensive line. Senior defensive tackle Ra'Shede Hageman leads a unit looking to fill gaps at linebacker and cornerback.

9. Indiana: The arrow is pointed up in Bloomington despite a poor finish to the regular season, and with eight home games on the slate in 2013, Indiana should expect to go bowling. Third-year coach Kevin Wilson has three quarterbacks with experience -- Tre Roberson, Cameron Coffman and Nate Sudfeld -- at his disposal, as well as other weapons such as running back Stephen Houston and receiver Cody Latimer. IU's defense once again is a major question mark, but recruiting efforts have picked up on that side of the ball.

10. Purdue: If the Heart of Dallas Bowl was any indication, new Boilers coach Darrell Hazell has a lot of work ahead in Year 1. Purdue loses its top two quarterbacks (Robert Marve and Caleb TerBush), its top defender in Kawann Short and other key contributors on both sides of the ball. Hazell's predecessor, Danny Hope, signed a bunch of quarterbacks in his recent recruiting classes, and it will be interesting to see who rises to the top. Hazell should be able to clean up some of Purdue's sloppy play, but the Boilers have quite a few question marks after a disappointing 2012 campaign.

11. Iowa: After taking a significant step back in 2012, Iowa might have a tough time turning things around in a loaded Legends Division in 2013. The Hawkeyes welcome in a new quarterback (Jake Rudock) and need playmakers to emerge around him to generate much better results in Year 2 under coordinator Greg Davis. The defensive front seven could be solid as Iowa boasts a strong linebacking corps, but the Hawkeyes must plug a few holes in the secondary and get back to their traditionally stout play on D.

12. Illinois: Coach Tim Beckman needs to show significant signs of progress in Year 2 after a disastrous first season, and he might not have the personnel to do so. The Illini once again lose several defenders to the NFL draft and need to fill holes along the defensive line and in the secondary. Their bigger concerns are on the offensive side, as they had fewer playmakers than any Big Ten team in 2012. Veteran quarterback Nathan Scheelhaase returns, but Illinois needs a much better plan on offense and the personnel to get things done. An influx of junior college players must step up in a make-or-break year for Beckman.

The NCAA hoped its stern ruling on Penn State's football program Monday would help change the culture in college football.

Opposing coaches staking out Penn State players in the parking lot of the football program? Probably not what NCAA president Mark Emmert had in mind.

Several opposing coaches have been spotted in State College, including a sizable group from Illinois.

From ESPN.com's latest news story:

[Penn State head coach Bill] O'Brien and his colleagues walked past a group of six coaches carrying University of Illinois bags and suitcases. A Penn State official told ESPN.com that no words were exchanged between O'Brien and the Illinois contingent. O'Brien declined to identify the players who have been offered up to 50 scholarships, but Illinois assistant athletic director Kent Brown acknowledged a group of Fighting Illini coaches are on Penn State's campus to recruit "a player or two -- maybe more."

Needless to say, Illinois coach Tim Beckman will be asked about this "strategy" on Thursday at Big Ten football media days. While some will say recruiting is recruiting and Penn State players are all fair game, it doesn't seem right to have opposing coaches staking out Nittany Lions players like this.

An Illinois spokesman told ESPN.com that athletic director Mike Thomas has contacted Penn State athletic director Dave Joyner about the Illini's intentions.

Penn State sophomore cornerback Adrian Amos tweeted this morning, "We have chosen to stay at Penn State and opposing coaches are outside our apartment, was that the intention of the NCAA? #comeonman."

A group of Penn State players, including quarterback Matthew McGloin and linebacker Michael Mauti, reaffirmed their commitment to the program earlier Wednesday. Absent from the group, star running back Silas Redd, who is being targeted by USC as a potential transfer. Redd and two teammates -- defensive tackle Jordan Hill and offensive lineman John Urschel -- were scheduled to travel Wednesday to Chicago for Big Ten football media days, but Penn State said they aren't coming. Only head coach Bill O'Brien will be in attendance Thursday and Friday. Colleague Joe Schad reports Redd is still mulling his decision to stay at Penn State or leave for USC.

The NCAA is making it very easy for Penn State players to transfer, but are opposing teams going too far in their immediate pursuit of the Nittany Lions' talent? Coaches staking out players on campus just feels a lot different than trying to flip recruits at the last minute before national signing day.

How would you feel about your team's coaches staking out the Lasch Building?

Speaking of Penn State recruits, while some already have jumped ship, the team's top verbal commit, quarterback Christian Hackenberg, is taking his time to decide his future. Colleague Mitch Sherman reports that according to Hackenberg's high school coach, Micky Sullivan, Hackenberg will visit State College to get all the facts before making his decision.

Ideally, the coach said, Hackenberg would visit Penn State and reach a decision before Aug. 7, when Fork Union opens fall practice. Fork Union begins the season on Aug. 25 against Richmond (Va.) Hermitage on ESPNU.

The Hackenbergs felt a bit of shock, Sullivan said, after the announcement Monday, which included a four-year postseason ban and the loss of 40 scholarships over four years.

Hackenberg and O'Brien bonded during the recruiting process, but O'Brien needs to make a good pitch to keep arguably the nation's top quarterback recruit on board. It'll be interesting to see how the Hackenberg situation plays out.