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The baseball postseason starts today. Who ya got? (Hint: birds on a bat).

• Adjusting on defense will be key for Ohio State's trip to Northwestern. Christian Bryant's father is encouraged by all the support for the injured Buckeyes safety. Urban Meyer won't ever apologize for going into win-the-game mode.
• Northwestern is relishing this week's big-game atmosphere at home. Teammates are confident that Venric Mark will play this week. Pat Fitzgerald answered a reporter's phone.
• Michigan's offensive line is still in flux as it gets ready for Minnesota. Brady Hoke wants to get a second running back some early work versus Minnesota. Jake Ryan could potentially return at Penn State.
• Silas Redd's decision to transfer to USC backfired. Indiana-Penn State is a big game for both sides. Bill Belton has left 2012 behind him.
• Here are five wins to remember from Kirk Ferentz's success against Michigan State. Defense should rule the day in Iowa City.
• Michigan State is mixing and matching on the offensive line. Jamal Lyles is starting to make a difference at tight end for the Spartans.
• Nebraska defensive end Greg McMullen, an Ohio native, is eager for Big Ten play. The Huskers are confident in their quarterback situation despite health questions around Taylor Martinez.
• Minnesota got a commitment from a 2014 linebacker. The Daily Gopher asks some uncomfortable questions about Jerry Kill's team.
• Indiana has a tough road ahead as Big Ten play opens for the Hoosiers. Kevin Wilson went back to the drawing board during the bye week (subscription required).
• High praise is coming Illinois offensive coordinator Bill Cubit's way. Tight ends have taken on a larger role in the Illini offense. Big Ten losing streak? What Big Ten losing streak?
• Wisconsin has almost no margin of error in its quest to repeat as Big Ten champs. Gary Andersen feels good about the health of his team during the bye week and said star running back Melvin Gordon would be ready to play next week. Andersen is trying to learn from last week's loss.
• The bye week did not start off well for Purdue, as two young receivers were arrested on suspicion of theft.

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.

Five lessons from four games in Week 5. Got that?

Let's go ...

1. Ohio State's young defense is growing up: Lost amid the Braxton Miller-Kenny Guiton debate this week was the fact a mostly young Ohio State defense with only one returning starter in the front seven would be put to the test by Melvin Gordon, James White and the formidable Wisconsin run game. The young Bucks certainly earned a passing grade after holding Wisconsin to just 104 yards on 27 carries. Gordon's knee injury limited the Badgers, but Ohio State prevented big runs and forced Wisconsin to win the game through the air. Linebacker Ryan Shazier shined, while linebacker Curtis Grant and lineman Michael Bennett both recorded sacks. The loss of safety Christian Bryant to a season-ending ankle injury is a big blow, but Ohio State has enough talent in the secondary to make up for it, as long as they don't run into Jared Abbrederis again soon. Ohio State's offense will win plenty of games, but you know what they say about defenses and championship. These might not be the typical Silver Bullets, but they're developing and can build on Saturday's performance as they face an even another formidable offense in Northwestern next week.

2. Wisconsin is an excellent 56-minute team: Gary Andersen's crew showed plenty of grit Saturday night in Columbus. Quarterback Joel Stave quieted some of his critics -- thanks in large part to a career performance from Abbrederis (10 catches, 207 yards, 1 TD) -- and linebacker Chris Borland was brilliant, as usual. But Wisconsin's inability to finish off halves remains a troubling trend, and it surfaced in the loss to Ohio State. The Badgers trailed by only three points when freshman cornerback Sojourn Shelton dropped an easy interception near the goal line. Miller found Philly Brown for a 40-yard touchdown on the next play, giving Ohio State a huge boost with one second left in the half. Wisconsin struggled to manage the clock down the stretch as its comeback attempt fell short. This isn't a team built to come back in games based on the pass game, and it showed. Coupled with the Arizona State debacle (granted, more officiating than execution), Wisconsin has had a lot of bad things happen at critical moments. That's what could separate the Badgers from a fourth consecutive Big Ten title.

3. Iowa will be a factor in the Legends Division: The Hawkeyes might not be a great team yet, but it's clear they are vastly improved from last season. On Saturday, Iowa went into Minnesota and pushed the Gophers around on their home turf, piling up 464 total yards and allowing only 30 rushing yards in a 23-7 win. The pig will return to Iowa City, but even more importantly, the hogs up front are getting it done in classic Kirk Ferentz fashion. Iowa has rushed for at least 200 yards in every game this season and went for 246 against a Minnesota defense that thought it had made strides in that area. This team has an identity, and it starts with the power running game led by Mark Weisman and a solid offensive line. Quarterback Jake Rudock has shown an ability to extend plays, and Iowa even got an explosive play in the passing game when Damond Powell took a short pass 74 yards to paydirt. The defense is also playing well right now; the Gophers' only score came after a long kickoff return. The Hawkeyes are 4-1 and gets Michigan State at home next week, while Northwestern and Michigan still must come to Kinnick Stadium. The schedule is difficult the rest of the way, but Iowa will have a big say in who wins the Legends.

4. Nathan Scheelhaase is the Big Ten's most improved player: A year ago, Scheelhaase was sputtering at the helm of one of the nation's worst offenses, hardly resembling the player who had shown promise as a freshman and during the first part of his sophomore season. No Big Ten player has made bigger strides in the past season than the Illinois senior quarterback, who threw five first-half touchdown passes Saturday against Miami (Ohio) and finished with 278 pass yards on 19 of 24 attempts. Scheelhaase leads the Big Ten in passing yards and is second in touchdowns (12), tripling his total from last season. He's just five touchdown passes shy of his single-season best and 15 shy of Kurt Kittner's single-season team record. Offensive coordinator Bill Cubit deserves a lot of credit for Scheelhaase's surge -- and that of the entire Illini offense -- but Scheelhaase clearly is back on track after a year and a half in the dark. It will be interesting to see what he does this week against Nebraska's shaky defense.

5. Future starts now for Etling, Purdue: Darrell Hazell stuck with senior quarterback Rob Henry through this season's early offensive struggles, but the Purdue coach realized it was time for a change Saturday against Northern Illinois. The last straw was Henry's second interception of the first half, a terribly thrown floater into the Huskies' end zone. That prompted Hazell to give the reins over to true freshman Danny Etling, the prized former recruit who made his collegiate debut. This was no fairy tale, so Etling didn't lead the Boilermakers to a comeback victory. He threw two interceptions, including a pick-six, and narrowly avoided another one. But Etling (19-for-39, 241 yards) did show good mobility and flashed his strong arm, especially on his first career touchdown pass, a 16-yarder to Cameron Posey. The offense will have more of a chance to stretch the field with him under center. Quarterback is hardly the only problem for Purdue, which got housed 55-24 at home by a MAC team and might have a hard time finding another win this season. But while Boilers fans don't like to see the words "Danny" and "hope" in the same sentence, Etling at least gives them something to look forward to as Hazell tries to work the program out of this mess.