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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.

We're past the quarter pole of the Big Ten season, and the predictions race is all even at 40-6. It's Week 5 on the schedule, but there are only four games involving Big Ten teams, as half of the league is off.

Let's get started ...

MIAMI (OH) at ILLINOIS

Brian Bennett: Miami is 0-3 and has been outscored 107-21. Have fun, Nathan Scheelhaase. I see a 350-yard passing day in your future. ... Illinois 38, Miami 10


Adam Rittenberg: The first open week fell at a good time for Illinois, which had a chance to regroup on both sides of the ball. This might feel like another Saturday off as Miami is truly awful. The Illini's defense rebounds and Josh Ferguson reaches the end zone twice as Tim Beckman's squad exceeds last year's wins total. ... Illinois 31, Miami 13

NORTHERN ILLINOIS at PURDUE

Adam Rittenberg: Northern Illinois hasn't been overly impressive so far and could easily be 1-2. Purdue is a desperate team doing some "soul searching," according to coach Darrell Hazell, after a 1-3 start. The Boilers take an early lead but Northern Illinois' run game, led by quarterback Jordan Lynch, proves to be too much in the second half. Lynch scores two fourth-quarter touchdowns as NIU prevails. ... Northern Illinois 38, Purdue 27

Brian Bennett: It would be hard to pick Purdue against any half-decent FBS team right now with the way the Boilermakers' offense is sputtering. Defensive coordinator Greg Hudson helped slow down the Huskies in last year's Orange Bowl as a Florida State assistant, and Hazell knows Northern Illinois very well from his MAC days. That should help a little, but Purdue has a hard enough time staying out of its own way right now. ... Northern Illinois 28, Purdue 20.


IOWA at MINNESOTA

Brian Bennett: Very difficult call, as both teams are similar in their approach. I think Iowa has a better chance of moving the ball through the air than Minnesota, though Jerry Kill might surprise us. I'd pick Iowa if the game were in Iowa City, but I think the home field may be just enough to get Minnesota over the top. The Gophers pick up a defensive score, and the legend of Mitch Leidner grows as he runs for 125 and two scores. ... Minnesota 23, Iowa 21


Adam Rittenberg: Toughest pick of the week, for sure. I really liked what I saw from Minnesota against San Jose State, but sooner or later, the lack of a passing game will catch up with the Gophers. Iowa is showing better balance on offense and should do just enough to contain Minnesota's ground game. Jake Rudock finds C.J. Fiedorowicz for the winning touchdown pass in the final minute as Iowa keeps the bacon. ... Iowa 28, Minnesota 24

WISCONSIN at OHIO STATE

Adam Rittenberg: It wouldn't shock me if Wisconsin records the upset, but Ohio State has too much firepower, and the Badgers remain one-dimensional on offense. Melvin Gordon shows why he's arguably the nation's top running back with 180 yards and two touchdowns, but Ohio State rallies in the second half behind Braxton Miller, who accounts for three touchdowns in his return. This will be a fun one in Columbus ... Ohio State 37, Wisconsin 30

Brian Bennett: Fun one is right. Wisconsin never gets blown out anymore, and the Badgers have the run game to give Ohio State's young defense fits. But I agree that the Buckeyes have a few too many weapons on offense, particularly with Miller's return, while the Badgers' passing game is too shaky. Miller leads the Buckeyes out to a big early lead before Wisconsin makes a late comeback behind scores from James White and Gordon. Bradley Roby intercepts Joel Stave to seal it. ... Ohio State 34, Wisconsin 28


There's our forecast. Now it's time to reach out to our adoring public. As a reminder, throughout the season we'll choose one fan/loyal blog reader each week to try his or her hand at outsmarting us. There's nothing but pride and some extremely limited fame at stake. If you're interested in participating, contact us here and here. Include your full name (real names, please) and hometown and a brief description why you should be that week's guest picker. Please also include "GUEST PICKS" in all caps somewhere in your email so we can find it easily.

This week's guest picker has been all over the Big Ten map. Phillip Mykleby from Minneapolis, the floor is yours.

I'd like to be a guest picker for this weeks games if you don't mind. I guess you can I've been all around the Big Ten in my lifetime. I'm a lifelong Iowa Hawkeye fan growing up and undergrad (I actually met you once in Iowa City for Iowa-Michigan in 2009), then off to Nebraska for grad school, and now I work for the U of Minn. This weekend's game for the Floyd of Rosedale has some added meaning for me. And my entire family will be coming up from Iowa and cheering for the Hawkeyes in the Gopher student section!

Here are Phillip's Week 4 picks:

Illinois 45, Miami (Ohio) 10
Northern Illinois 41, Purdue 28
Iowa 28, Minnesota 24
Ohio State 42, Wisconsin 24

SEASON RECORDS

Adam Rittenberg: 40-6
Brian Bennett: 40-6
Guest pickers: 36-10

The constant talk about the Big Ten's national perception and performance against other conferences can get a bit tiresome.

But there's also no denying that the league has an image problem that stems from a lack of noteworthy wins. And with nonconference play all but wrapped up (three nonleague games remain -- Illinois versus Miami (Ohio) and Purdue versus Northern Illinois this week, and BYU at Wisconsin in November), we can make a few judgments.

The good news is that there weren't many total embarrassments, though Michigan certainly flirted with a couple the past two weeks. The not-so-good news: The Big Ten finished an underwhelming 9-8 against BCS AQ teams. That record is even less impressive when you consider the caliber of the competition.

The best win remains Michigan's Week 2 triumph over Notre Dame, which is the conference's only victory over a ranked opponent for now. Other BCS AQ scalps include California (twice), Cincinnati, Connecticut, Iowa State, South Florida and Syracuse (twice). The losses were to Arizona State (allegedly), Cincinnati, Notre Dame (twice), Missouri, UCF, UCLA and Washington.

The Big Ten went 3-2 against the AAC, 2-0 against the ACC (Syracuse), 1-0 against the Big 12 (Iowa State), 2-3 against the Pac-12, 0-1 against the SEC (Missouri) and 1-2 against Notre Dame. As you can tell, the league didn't exactly play the cream of the crop in the ACC, Big 12 or SEC. The Big Ten's slate was low on marquee games, and the conference didn't win any of the ones that were there, save for going 1-for-3 against what looks like a decent but not great Notre Dame team.

Luckily, conference play is almost here, and that will consume us for the next couple of months. But if the Big Ten wants to earn more respect nationally, it will have to wait until bowl season for another shot.

Take that and rewind it back ...

Team(s) of the week: It's a tie between Iowa and Minnesota. The Hawkeyes beat Western Michigan 59-3 in their most complete performance in ages, while the Gophers dismantled San Jose State and its NFL-caliber quarterback 43-24. Bring on Floyd of Rosedale!

Worst hangover: Michigan State hoped that maybe, just maybe, it had found a solution to its passing game woes when Connor Cook and the offense rolled against Youngstown State two weeks ago. Instead, the Spartans' passing game looked just as bad as last year in a 17-13 loss at Notre Dame. And the quarterback controversy is not even over, as coach Mark Dantonio strangely went with Andrew Maxwell on Michigan State's final possession -- which unfolded just as you would have expected, with three incomplete passes, two penalties and a Maxwell scramble that came up far short of the first-down marker on fourth-and-long.

The Spartans also killed the small momentum they had going in the second half by calling for a halfback pass from R.J. Shelton, who threw an interception into tight coverage. Apparently, Michigan State failed to learn from its rival last year, but how about everyone in the Big Ten agree not to call halfback passes in South Bend for a while? Dantonio said he made the Shelton pass call, and he likes to name his trick plays after kids' movies. Call that one "The NeverEnding Story," because that's what MSU's offensive disaster has become.

Big Man on Campus (Offense): Minnesota QB Mitch Leidner made his first career start in place of the injured Philip Nelson, and he didn't disappoint. Leidner ran for 151 yards and four touchdowns against San Jose State. The 6-foot-4, 233-pounder showed off some speed when going around the edge and lots of toughness as he continually pushed forward for more yards after first contact.

Big Man on Campus (Defense): Iowa cornerback B.J. Lowery had a pair of pick-sixes against Western Michigan.

Big Man on Campus (Special Teams): This one's an easy call: Iowa's Kevonte Martin-Manley returned a pair of punts for touchdowns in the second quarter, piling up 184 total punt return yards. He became the third Big Ten player to have two punt return touchdowns in the same game and the first since 1983 (Ohio State’s Garcia Lane).

Fun with numbers (via ESPN Stats & Information): Your new Big Ten leader in Total QBR: Ohio State's Kenny Guiton, who's No. 10 nationally with an 86.7 rating (based on a 100-point scale). A fan asked on Twitter on Saturday night whether the Buckeyes' Guiton and Braxton Miller might be the best two quarterbacks in the league. A strong case could be made for that. ... Wisconsin's Melvin Gordon leads the nation in rushing with 624 yards. What's crazy is that the No. 2 rusher, Rutgers' Paul James, trails Gordon by 51 yards and has 25 more carries on the season. Gordon is still averaging just over 13 rushes per game. ... Michigan State in a nutshell: The Spartans rank third nationally in total expected points added by the defense at 74.32; the offense, meanwhile, has contributed negative-six expected points added. ... Four Big Ten teams (Wisconsin, Ohio State, Minnesota and Nebraska) rank among the top five in the FBS in rushing yards. Five league teams (Iowa, Nebraska, Minnesota, Northwestern and Ohio State) rank in the top 10 in number of total rush attempts, with the Hawkeyes leading the way at 218 (third nationally). ... Problem not solved: Nebraska has fumbled eight times this year, more than every team except Idaho. The only good news is that the Huskers have lost only four of them. ... Penn State's defense has allowed only 12.8 first downs per game, ranking fourth in the FBS, just behind Michigan State. ... An overlooked part of Minnesota's early success: Gophers opponents have started their possessions inside their own 25-yard line after a kickoff 17 times this season, the most in the nation. Thank kicker Chris Hawthorne and the coverage unit for that. By comparison, Michigan's opponents have started a drive after a kickoff inside their 25-yard line just five times this season.

Stern discipline: Five days after the Pac-12 reprimanded the officials who botched the ending of the Wisconsin-Arizona State game and promised "additional sanctions" for that crew, the same group worked the Utah-BYU game on Saturday night. Yep, that's some punishment, having those officials call an intense in-state rivalry featuring a Pac-12 team on the road. BYU fans didn't like the calls that went against their team in the 20-13 Utes win and pelted the officials with trash after they left the field. That was deplorable by those fans, but as far as we can tell, it was the only real punishment those refs received. The Pac-12 refs aren't the only ones who mess up, though. That was a Big Ten unit hosing Michigan State on those pass interference calls at Notre Dame.

Strangest moment(s): San Jose State's Harrison Waid tried to get revenge for battered punters everywhere after he got pancaked on a block by Minnesota's Derrick Wells. Waid hopped up and tried to go after Wells. Alas, that's a battle a punter will never win, and he got ejected from the game. Yes, a punter was kicked out for fighting.

Meanwhile in Columbus ... as if Ohio State needed any extra help against Florida A&M, running back Jordan Hall used umpire Jim Krogstad as a blocker and then a bowling pin on his way to a touchdown. Maybe FAMU could let Krogstad wet his beak on some of the $900,000 Ohio State paid the school for that 76-0 steamrolling.

Say what?: Remember when Penn State coach Bill O'Brien called his team a bunch of "fighters" on national TV at the end of last year's Wisconsin finale, but several people thought he said a different "F" word? Well, O'Brien appeared to almost use another "F" word during his postgame news conference Saturday before catching himself. O'Brien was then asked if he was going to say "fighters" again. "We do have a bunch of fighters," he said. "I don't know anyone who debates me on that. It's like my mom -- she still doesn't believe I said 'fighters.' Do I look like the type of guy who swears?"

Remember two weeks ago when we were debating Ohio State versus Michigan as the Big Ten's top team? Well, the Buckeyes have created some separation from Michigan and the rest of the league with two dominant offensive performances. Michigan, meanwhile, either has a massive hangover from beating Notre Dame or a lot of issues to sort out.

We gave the Wolverines the benefit of the doubt after the Akron game and kept them at No. 2. After Saturday night's slopfest at Connecticut, we can no longer keep Michigan in the second slot. Northwestern looked lackluster for the second straight week but avoided the major scare Michigan has endured. Wisconsin, meanwhile, might be the league's second-best squad. We'll find out a lot about the Badgers this week in Columbus.

Minnesota and Iowa make nice moves this week, while Indiana takes a tumble.

As a reminder, we keep these rankings consistent with how we vote in the ESPN.com Top 25. Here's one final look at last week's power poll.

Let's get to the rundown ...

1. Ohio State (4-0, last week: 1): We'll finally get a gauge on these Buckeyes as they open Big Ten play Saturday night against Wisconsin, but the recent results have been encouraging. Braxton Miller's absence once again didn't faze Ohio State, which scored 34 points in the first quarter and received a nice boost from running back Carlos Hyde in his season debut. Backup signal-caller Kenny Guiton continued his surge with a school-record six touchdown passes. Miller likely returns this week, but the Buckeyes' offense clearly is more than just one man this season.

2. Northwestern (4-0, last week: 3): For whatever reason, Northwestern looks worse against weaker nonleague foes than seemingly stronger ones. The Wildcats had more positives against Cal and Syracuse than Western Michigan and Maine, although they were never in serious danger of losing in the past two weeks. Linebacker Damien Proby sparked a takeaway-driven defense Saturday. Quarterbacks Kain Colter and Trevor Siemian struggled but have two weeks to prepare for Ohio State, when running back Venric Mark is expected back.

3. Wisconsin (3-1, 1-0 Big Ten; last week: 4): Credit Gary Andersen's players for not letting last week's unfortunate ending linger as they opened Big Ten play against Purdue. Wisconsin went back to what it does best, overpowering opponents with the run game, as Melvin Gordon and James White combined for 292 rush yards and four touchdowns. The Badgers' defense bottled up Purdue, surrendering only 12 first downs, 45 rush yards and 180 total yards. You have to like how Wisconsin is performing before this week's showdown in Columbus.

4. Michigan (4-0, last week: 2): The Akron game could be forgivingly dismissed as a letdown. But when many of the same issues surface for the second straight week against a poor opponent, it's reason to be concerned. Michigan won't stay perfect much longer if quarterback Devin Gardner keeps turning over the ball (he leads the nation with 10 turnovers) and the offensive line endures periods of inconsistent play. Coach Brady Hoke and his staff have plenty of items to address this week before the Jug game against potentially undefeated Minnesota.

5. Nebraska (3-1, last week: 6): After a turbulent eight days, Bo Pelini wanted his players to have some fun in their final nonleague tuneup. The offense had plenty despite playing without top quarterback Taylor Martinez, eclipsing 300 pass yards and 300 rush yards. Reserve quarterbacks Tommy Armstrong and Ron Kellogg III both performed well. The defense had a lot less fun, however, surrendering 465 yards in a performance that Pelini labeled its worst of the season. Nebraska has to get a handle on its defense this week before opening Big Ten play against Illinois.

6. Minnesota (4-0, last week: 7): Knock San Jose State if you must, but the Spartans provided the biggest test for Minnesota to date, and the Gophers passed it with flying colors. Minnesota showed the physical dominance coach Jerry Kill has been waiting for, piling up 353 rush yards and six touchdowns behind quarterback Mitch Leidner and running back David Cobb. Although San Jose State's David Fales showed why he's an NFL prospect, the Gophers continued to force turnovers. Minnesota hosts Iowa this week in a game that has more than bacon on the line.

7. Michigan State (3-1, last week: 5): The Spartans looked like the better team for much of Saturday's game at Notre Dame. But many of the same issues that surfaced in close losses last season -- stalled drives, dropped passes, not enough takeaways and missed field goals -- surfaced in a 17-13 setback. Coach Mark Dantonio and his players say this feels different, and that they can overcome their errors to make some noise in a wide-open Legends Division. The defense remains championship-level, but there are other issues to sort out, namely quarterback.

8. Penn State (3-1, last week: 8): Kent State's woeful offense turned out to be the perfect cure for a Nittany Lions defense that struggled mightily in a Week 3 loss to Central Florida. Safety Ryan Keiser and cornerback Jordan Lucas helped trigger Penn State's first shutout since 2010, as the Lions allowed only nine first downs and 190 total yards. The run game once again surged behind Akeel Lynch (123 rush yards) and others. Penn State's defense will face much greater tests when Big Ten play begins in two weeks.

9. Iowa (3-1, last week: 11): Kirk Ferentz's crew is clearly on the rise after its most complete performance in recent memory. Iowa received numerous contributions on offense, two punt return touchdowns from Kevonte Martin-Manley and a pick-six from B.J. Lowery -- all during a 38-point first half against Western Michigan. Lowery added another pick-six in the second half and stomped the Broncos. After a rough start to the season, Iowa has the momentum it needs heading into a pivotal Big Ten opener against Minnesota.

10. Illinois (2-1, last week: 10): The Illini sat back and watched the rest of the Big Ten in Week 4, enjoying the first of two open weeks. They'll have an excellent chance to improve to 3-1 this week against an 0-3 Miami (Ohio) squad that was shut out Saturday against Cincinnati and has scored just 21 points in its first three games. This is the perfect opportunity for Illinois' defense to rebound after getting gashed by Washington in Week 3. Illini quarterback Nathan Scheelhaase tries to bounce back after completing just 9 of 25 pass attempts.

11. Indiana (2-2, last week: 9): Just when Indiana appears ready to turn a corner, it becomes Indiana again. For the second time in three games, Indiana limped out of the gate and fell behind, never finding a good offensive rhythm and struggling to stop Missouri's balanced attack. Missouri piled up 623 yards, a Memorial Stadium record for an Indiana opponent. The Hoosiers' defense remains far too vulnerable, and quarterback Nate Sudfeld struggled, throwing three interceptions. There's a lot to fix in the open week before Penn State comes to town.

12. Purdue (1-3, 0-1 Big Ten; last week: 12): Trips to Madison haven't been kind to the Boilers, and Saturday's proved to be no exception as Darrell Hazell's team took a step back after an encouraging performance against Notre Dame. When you can't run the ball or stop the run, you have no chance, and Purdue struggled mightily in both areas. Hazell admits Purdue must do some "soul searching" following a rough start, and things don't get any easier this week against Jordan Lynch and Northern Illinois.

Five lessons from the week that was in Big Ten football:

1. Wisconsin-Ohio State could be the Big Ten's game of the year: In recent years, the Badgers-Buckeyes matchups have been more significant than Ohio State-Michigan or any other conference pairing. This week's showdown at Ohio Stadium could be just as significant. Ohio State is the Big Ten's best team, and Wisconsin might be No. 2 after another dominant rushing performance against Purdue. Both teams ascribe to the power run game but do it in vastly different yet equally entertaining ways. Although the Kenny G show has been terrific for the Buckeyes, top quarterback Braxton Miller should be back for the Big Ten opener. Miller might not be the biggest offensive star on the field, as Wisconsin running back Melvin Gordon has performed as advertised, racking up 624 rush yards and seven touchdowns in the first four games. The game features first-year Wisconsin coach Gary Andersen going up against his former boss, Urban Meyer. One of these teams has held at least a share of the past eight Big Ten titles. The winner takes control of the Leaders Division. Should be a great one.

2. Michigan has real problems: It was tempting to write off Michigan's struggle to beat Akron last week as a hangover from the high-stakes Notre Dame game. But no hangovers the past two weeks. The Wolverines found themselves down two touchdowns in the second half Saturday night at UConn, the same Huskies team that lost at home by 15 to Towson in the opener. Michigan rallied for the 24-21 win, and at least Brady Hoke's team has shown grit at the end of games the past three weeks. But quarterback Devin Gardner committed three more turnovers (two interceptions, one fumble), and he has devolved from potential Heisman candidate to a potential problem spot in just a fortnight. An even thornier issue is the continued inability of the Michigan offensive line to open consistent holes for the running game. If the Wolverines are having trouble running the ball against Akron and UConn, what's going to happen in Big Ten play? There's plenty of time for Hoke & Co. to right the ship, and the upcoming bye week is a welcome sight. But right now, Michigan does not look like the top-15 team we thought it was two weeks ago.

3. The Iowa-Minnesota game has added meaning: We love the pig, but there's a lot more than the Floyd of Rosedale at stake (steak?) this week as Iowa and Minnesota open Big Ten play in Minneapolis. Both teams have shown improvement, especially with their power running games, and enter the matchup with momentum. Iowa exploded for 38 first-half points Saturday against Western Michigan and finished with 59, its highest total since 2002. The Hawkeyes received contributions in all three phases, including two punt return touchdowns from receiver Kevonte Martin-Manley and two pick-sixes from cornerback B.J. Lowery. Iowa's defense has yet to allow a rushing touchdown. After a miserable offensive performance in 2012, Iowa is starting to establish an identity behind its line and a stable of running backs. Minnesota is doing the same, finally showing it can control the line of scrimmage and dominate on the ground. Despite not having its starting quarterback (Philip Nelson) or starting running back (Donnell Kirkwood), Minnesota racked up 353 yards and six rushing touchdowns, including four by backup signal-caller Mitch Leidner, in an impressive win against San Jose State. The Gophers are 4-0 for the second straight season. Both teams have very challenging league schedules, so getting off to a 1-0 start is huge. Big one at TCF Bank Stadium this week.

4. Bo Pelini is still standing, but needs time to regroup: The open week couldn't come at a better time for Nebraska's coach and his team, which ended an emotional week with a 59-20 thumping of FCS South Dakota State. The firestorm from audio-gate should die down, at least a little, as Pelini got through Saturday's game without any further controversy, and received mostly support from Huskers fans. Pelini is hardly out of the woods, though, and must turn his attention to a defense that needs a ton of work before Big Ten play begins Oct. 5 against Illinois. The Huskers surrendered 465 yards to the Jackrabbits, who had a balanced attack (238 yards passing, 227 yards rushing). Pelini called it the defense's worst performance in a season filling up with them. Whether it's youth, talent, scheme or attention to detail, Nebraska's defense must get back on track soon. Although the schedule remains favorable the next month or so, it's hard to see the Huskers repeating as Legends Division champs without some significant upgrades on D.

5. Indiana still hasn't arrived: Indiana entered the year with high hopes for a bowl game this year, and with a warp-speed offense averaging 50 points a game through three weeks, the Hoosiers didn't appear to be deluding themselves. But after an impressive showing last week against Bowling Green, Kevin Wilson's team found itself right back in a familiar spot: unable to defend a good team. Missouri racked up 623 yards -- the most in Memorial Stadium history -- in a 45-28 win in Bloomington on Saturday. The game wasn't even as close as the final score, as Indiana tacked on a touchdown and two-point conversion with 10 seconds to go, and Missouri had three turnovers in the first half to kill promising drives. The Hoosiers' vaunted offense failed to score from the 6:31 mark of the second quarter until there was 11:24 left in the game, and IU punted nine times after punting only five times in the first three games combined. The loss to Navy now hurts even more, as Wilson's team would have to go 4-4 in Big Ten play to become bowl eligible. That seems like an awfully tall order. Penn State comes in next after a bye for both teams, and the Nittany Lions just righted their defense in a 34-0 shutout of Kent State. Penn State has never lost to Indiana and will be favored soundly again on Oct. 5. It might be wait for next year time again in Hoosierland.

Recognizing the best and the brightest from Week 4 in the Big Ten:

Iowa PR/WR Kevonte Martin-Manley and CB B.J. Lowery: Here's one way to ring up a bunch of points: Get four combined special teams and defensive scores. Martin-Manley scored on back-to-back punt returns in the second quarter, from 83 yards and 63 yards out, and Lowery brought a pair of interceptions to the house, from 35 and 13 yards away, in the Hawkeyes' 59-3 blasting of Western Michigan.

Ohio State QB Kenny Guiton: OK, it was only Florida A&M, which was wildly overmatched in the Horseshoe. Still, we have to acknowledge Guiton's unbelievable run as Braxton Miller's replacement. He set a Buckeyes' record with six touchdown passes while completing 24-of-34 passes for 215 yards in the 76-0 whitewashing. And now it's probably back to being the backup when Miller returns.

Minnesota QB Mitch Leidner: Subbing for the injured Philip Nelson (hamstring), Leidner set a Gophers quarterback record with four touchdown runs in a 43-24 win over San Jose State. He piled up 151 yards on 24 rushing attempts and was virtually impossible to bring down on first contact. Leidner only completed five passes for 71 yards, but Minnesota hardly needed to throw, as its ground game dominated.

Wisconsin RBs Melvin Gordon and James White: The Badgers' dynamic backfield duo was at it again versus Purdue. Gordon ran 16 times for 147 yards and three touchdowns, while White added 145 yards on 16 carries, as both averaged better than nine yards per attempt. White also had three catches for 49 yards in the 41-10 conference victory.

Michigan LB Desmond Morgan: He gets a sticker for just one play, but it was a big one. Morgan picked off UConn's Chandler Whitmer early in the fourth quarter and returned it 29 yards to set up the tying touchdown in Michigan's 24-21 escape in East Hartford. That might go down as a season-saving play for the Wolverines.

The debate is over, at least for now. Ohio State affirmed itself as the Big Ten's top team by putting on an offensive show against Cal, despite missing its top quarterback and top running back.

There's more doubt about whether Michigan or Northwestern is No. 2 after the Wolverines' surprising struggles Saturday against Akron. For now, we have Michigan ahead by a nose hair, thanks to its win against Notre Dame.

Wisconsin might have moved up to the No. 2 line if the officials had given the Badgers a chance to win the game against Arizona State. We like most of what we saw from Gary Andersen's crew on Saturday night. The same can't be said for Nebraska, which takes a tumble after folding the tent against UCLA, and Penn State, which caved defensively against UCF.

Week 3 was mostly rough for the Big Ten, but it had some bright spots. Michigan State found a quarterback, Indiana regained its footing on defense, and Iowa impressed on the ground against Iowa State.

There's not much separation in the league's bottom half, but as we noted Sunday, the Big Ten might not have a truly bad team.

Here's one last look at last week's rankings.

Now, let's get to the rundown ...

1. Ohio State (3-0, last week: 1): It'll take more than injuries and suspensions to slow down the Buckeyes' potent offense. Quarterback Braxton Miller didn't suit up against Cal, but backup Kenny Guiton once again stepped up with 276 pass yards and four touchdowns, to go along with 92 rush yards. Running back Jordan Hall (168 rush yards, 3 TDs) continued his brilliance filling in for the injured Carlos Hyde, who returns this week against Florida A&M.

2. Michigan (3-0, last week: 2): A week after looking like arguably the Big Ten's best team, Michigan backslid with a mistake-ridden performance against Akron. Brady Hoke's crew emerged with a win but also plenty of questions on both sides of the ball. As good as Devin Gardner has looked at times, the first-year starting quarterback must take better care of the football. Michigan also must patch up a vulnerable defense before Big Ten play.

3. Northwestern (3-0, last week: 3): Take away a lackluster first quarter against Western Michigan, and the Wildcats looked impressive on their home field. The offense clearly has improved despite the continued absence of star running back Venric Mark, as stand-in Treyvon Green (158 rush yards, 2 TDs) looks more than capable. Northwestern's defense remains too leaky but covers up yards with takeaways. The Wildcats have positioned themselves well for an Oct. 5 showdown with Ohio State.

4. Wisconsin (2-1, last week: 4): What is there left to say about the Arizona State ending? Wisconsin was far from perfect Saturday night, struggling to protect Joel Stave or stop back-shoulder throws from Arizona State's Taylor Kelly. But the Badgers fought hard in all three phases and received another huge boost from sophomore running back Melvin Gordon. They deserved better. It'll be interesting to see how they bounce back in the Big Ten opener against Purdue.

5. Michigan State (3-0, last week: 8): Look, an offense! And a quarterback! The Spartans finally start moving in the right direction in the rankings after a scoring explosion against Youngstown State. Connor Cook solidified himself as the team's starting quarterback with four touchdown passes and no interceptions, as Michigan State scored 35 first-half points. Sure, it's Youngstown State, but Michigan State needed a starting point on offense. It has one before a tough test at Notre Dame.

6. Nebraska (2-1, last week: 4): The collapses are no longer surprising because they seem to happen so often for Bo Pelini's teams. Sure, Nebraska normally keeps it together at home, and Saturday's third quarter was one of the worst in team history. But this is who these Huskers are under Pelini, a fragile team prone to blowout losses in big games. Nebraska falls off the national radar for a while but still could contend in the mediocre Big Ten.

7. Minnesota (3-0, last week: 7): It was a rough Saturday for the Gophers, who lost starting quarterback Philip Nelson to a hamstring injury and head coach Jerry Kill to another seizure. Minnesota also had a slow start against FCS Western Illinois until the offense caught fire in the fourth quarter behind running back David Cobb and backup quarterback Mitch Leidner, who was efficient in relief of Nelson. The Gophers face a test this week as San Jose State comes to town.

8. Penn State (2-1, last week: 6): It'll be a long week for defensive coordinator John Butler and a unit that surrendered 507 yards in the loss to UCF and had no answers for Knights quarterback Blake Bortles. After a final non-league tuneup against Kent State, Penn State opens Big Ten play against four potent offenses: Indiana, Michigan, Ohio State and Illinois. Wide receiver Allen Robinson is a beast, but Penn State needs more balance.

9. Indiana (2-1, last week: 10): The Hoosiers forced a punt against Bowling Green, and they did much, much more in one of their better defensive performances in recent memory. Bowling Green didn't score an offensive touchdown as defensive end Nick Mangieri and the Hoosiers bent but didn't break. Indiana had more than enough offense from quarterback Nate Sudfeld (335 pass yards, 2 TDs) and running backs Tevin Coleman (129 rush yards, 2 TDs) and Stephen Houston (155 rush yards), pulling away for an impressive win.

10. Illinois (2-1, last week: 9): Missed scoring opportunities in the first half doomed Illinois in the final 30 minutes against Washington, which repeatedly gashed a young Illini defense. But Illinois showed plenty of fight, even in the fourth quarter when the outcome seemed decided. Illinois has playmakers on both sides of the ball -- QB Nathan Scheelhaase, RB/WR Josh Ferguson, WR Ryan Lankford, LB Jonathan Brown -- and could surprise some Big Ten teams.

11. Iowa (2-1, last week: 11): There's an argument that Iowa should handle Iowa State rather easily, which is what happened Saturday in Ames. But Iowa hasn't handled the Cyclones nearly as often as they should, which is what made Saturday's performance so important. The Hawkeyes needed to win this one to generate some positive vibes, and thanks to a Mark Weisman-led run game and a solid defense, they got it done.

12. Purdue (1-2, last week: 12): The Boilers remain at the bottom, but we feel a lot better about them after the Notre Dame game. Quarterback Rob Henry and the offense looked more comfortable, and the defense contained the Irish run attack. There were still too many mistakes down the stretch, but coach Darrell Hazell can build on this. The problem is the schedule simply doesn't let up, as Purdue visits Wisconsin this week.

We've examined all the major quarterback competitions around the Big Ten entering spring practice. Now it's time to identify the quarterback who has the most to prove in the spring.

For that, we need your help.

Several Big Ten quarterbacks with starting experience find themselves in the middle of competitions. Some are dealing with new head coaches and/or new coordinators. Two are coming off of major injuries. Who has the most to prove this spring?

Here are the options:

Andrew Maxwell, Michigan State: Maxwell completed just 52.5 percent of his passes in his first season as Michigan State's starting quarterback. He averaged 200 pass yards a game and finished with 13 touchdowns and nine interceptions, but Michigan State's offense struggled to find the end zone or consistently move the ball. Maxwell started all 13 games in 2012, but was replaced by Connor Cook in the Buffalo Wild Wings Bowl against TCU. He has to re-establish himself as Michigan State's top option at quarterback and impress new coordinator Jim Bollman.

Philip Nelson, Minnesota: The Gophers accelerated their future by taking the redshirt off Nelson midway through the 2012 season. He started the final seven games at quarterback following injuries to MarQueis Gray and Max Shortell. Nelson showed some flashes early, struggled mightily down the stretch in Big Ten play, and then had two touchdown strikes in the bowl game against Texas Tech. Another offseason could really help his progress, but he'll face competition this spring from redshirt freshman Mitch Leidner.

Tre Roberson, Indiana: After becoming the first true freshman quarterback to start in team history, Roberson entered 2012 as the Hoosiers' top option and looked good in the first five quarters of the season before suffering a broken leg against Massachusetts. He's fully cleared for spring practice and has looked good in winter workouts, but he has to beat out Cameron Coffman and Nate Sudfeld for the starting job. Coffman started IU's final 10 games after Roberson's injury and finished second in the league in passing average (248.5 ypg), and Sudfeld performed well at times.

Nathan Scheelhaase, Illinois: It's odd to see one of the nation's most experienced quarterbacks (36 career starts) included in this group. But after a solid performance in the 2010 Texas Bowl and a strong start to 2011, Scheelhaase, like his team, has struggled for the past year and a half. Every starter is on notice after Illinois finished 119th nationally in both scoring and total offense last season. Reilly O'Toole could push Scheelhaase this spring, and Scheelhaase has to prove himself to new coordinator Bill Cubit.

Joel Stave, Wisconsin: The Badgers' piano-playing, Train-loving signal caller rejoins a crowded mix at quarterback this spring. Stave entered the starting lineup as a redshirt freshman last season and was making significant strides before suffering a broken collarbone against Michigan State. He showed good accuracy at times despite limited pass-catching options, and grades high in pass efficiency, a hallmark for Wisconsin quarterbacks. But Stave has to win over a new coaching staff and separate himself from a pool of quarterbacks that includes Curt Phillips, Danny O'Brien, Bart Houston and junior-college arrival Tanner McEvoy.