There's only one debate in the Power Rankings: Who's No. 2?

All the top teams held serve in Week 13, and the Big Ten championship matchup is set for Ohio State and Michigan State to meet Dec. 7 in Indianapolis. The Buckeyes remain atop the league, but which team comes next: Wisconsin or Michigan State?

Although most polls have Michigan State ahead of Wisconsin, we've been keeping the Badgers at No. 2. It's extremely close between the two, and it's too bad the Spartans and Badgers won't face one another this season, especially given their recent history.

We're actually split on the No. 2 spot. Brian is keeping Wisconsin ahead of MSU on his ESPN.com power rankings ballot, while Adam has flipped the two this week, noting Michigan State's superior quarterback and special-teams play.

A second-place tie doesn't really work in the Big Ten rankings, so Wisconsin remains at No. 2 by the slimmest of margins.

Elsewhere, Iowa and Minnesota trade places, and so do Illinois and Northwestern.

Here's one last look at the Week 12 rankings.

Now, for the newest rundown …

1. Ohio State (11-0, 7-0; last week: 1): Another easy afternoon at The Shoe for Urban Meyer's Buckeyes, who set a program record with their 23rd consecutive victory. Quarterback Braxton Miller (144 rush yards, 160 pass yards, 4 TDs) and running back Carlos Hyde (117 rush yards, two TDs) both hurt Indiana early and often, and linebacker Ryan Shazier (20 tackles) sparked a stout defensive effort. Ohio State is very much in the national-title hunt as it prepares to visit rival Michigan this week.

2. Wisconsin (9-2, 6-1; last week: 2): A BCS at-large appearance looks likelier for the Badgers, who won their fifth consecutive game Saturday and their 10th straight against Minnesota. The running backs might grab the spotlight, but it's time Wisconsin's defense received some credit for an exceptional season. Linebacker Chris Borland led the way Saturday with his NCAA record-tying 14th career forced fumble and two fumble recoveries, as the Badgers shut out Minnesota's offense. Wisconsin finishes the regular season against Penn State at Camp Randall Stadium.

3. Michigan State (10-1, 7-0; last week: 3): Quarterback Connor Cook and running back Jeremy Langford continue to sparkle in Big Ten play, as both men performed well in a win at Northwestern. The defense surrendered 224 yards but shut out Northwestern in the second half and recorded two takeaways. Michigan State is headed back to Indianapolis for the second time in three seasons to face Ohio State on Dec. 7. Can't wait.

4. Iowa (7-4, 4-3; last week: 5): Thanks to linebacker Anthony Hitchens and a much-improved defense, Iowa overcame four turnovers to rally past Michigan. Quarterback Jack Rudock (two TDs, three INTs) had an erratic day, but Iowa dominated the second half, erasing a 21-7 deficit to win 24-21. The Hawkeyes will be going to a decent bowl game, and they have a chance for a very nice finish if they can beat Nebraska on the road this Friday.

5. Minnesota (8-3, 4-3; last week: 4): The Gophers are modeling themselves after Wisconsin, which is good, but they're simply not there yet. Minnesota's flaws on offense, especially at wide receiver, showed up Saturday as the Gophers scored no offensive points on their home field. The defense kept the game relatively close, but Minnesota never seriously challenged Wisconsin in the second half. Things don't get any easier this week, when the Gophers visit Michigan State.

6. Nebraska (8-3, 5-2; last week: 6): A horrendous personal-foul call didn't doom the Huskers, who found a way to beat Penn State in overtime and showed some grit along the way. Running back Ameer Abdullah had his typical brilliant game, and quarterback Ron Kellogg III did a nice job in relief of Tommy Armstrong Jr. Kicker Pat Smith stepped up in the clutch as Nebraska won for the third time in four games. The Huskers host Iowa on Black Friday.

7. Michigan (7-4, 3-4; last week: 7): We'd normally move Michigan lower, but there's no place to put the Wolverines because Penn State and Indiana both lost, too. Linebacker Jake Ryan and the defense came to play at Iowa, forcing four turnovers and converting one into points. But the offense remains embarrassingly bad, especially in the run game. Michigan finished with 10 first downs, 60 rush yards and 158 total yards as the heat continues to rise on coordinator Al Borges. Things will likely get worse this week, when Ohio State storms into the Big House.

8. Penn State (6-5, 3-4; last week: 8): This time, Penn State had no late-game heroics because special-teams miscues and other problems resulted in an overtime loss on senior day. The Lions received a big performance from running back Zach Zwinak (149 rush yards) and quarterback Christian Hackenberg accounted for three touchdowns, but the team's limitations in all three phases showed up in the loss. Penn State ends the season with a trip to Wisconsin, which likely won't be pretty.

9. Indiana (4-7, 2-5; last week 9): The lingering defensive issues are there, but Indiana has a new problem: The offense isn't showing up. IU once again felt the absence of injured running back Tevin Coleman against Ohio State, recording just 122 rushing yards. Indiana actually had more first downs than the Buckeyes (24 to 22) but didn't score for three and a half quarters and couldn't stop Ohio State's big-play offense. Kevin Wilson's team finishes the season against Purdue at home.

10. Illinois (4-7, 1-6; last week: 11): Tim Beckman and his Illini players can finally stop talking about The Streak, as Illinois won a Big Ten game for the first time in 777 days (Oct. 8, 2011). There was some typical sloppiness, and the defense struggled early, but Illinois made enough plays down the stretch to get out of Purdue with a four-point win. The Nathan Scheelhaase-Steve Hull connection produced 169 yards and two touchdowns as the close friends are ending their careers on a good note.

11. Northwestern (4-7, 0-7; last week: 10): The unthinkable has happened, the worst-case scenario amazingly eclipsed: Northwestern's bowl streak is over at five seasons after a 4-0 start and a fourth-quarter lead against Ohio State on Oct. 5. The Wildcats actually moved the ball well against Michigan State but repeatedly stalled in plus territory and took no risks despite a winless mark in Big Ten play. Northwestern has its longest losing streak since 1998, and Pat Fitzgerald has some serious work to do in the offseason, which will begin next week.

12. Purdue (1-10, 0-7; last week: 12): Darrell Hazell is looking for any sign of progress and saw some against Illinois, as the Boilers played their first competitive game in the Big Ten. Purdue finally ran the ball a little, as Akeem Hunt eclipsed 100 yards on the ground, and the defense forced four turnovers. Ultimately, Purdue couldn't do enough offensively or slow down Illinois' pass game. The Boilers wrap up the season this week with the Bucket game in Bloomington, Ind.