Michigan Wolverines

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.

Only one Big Ten game took place since the last edition of the power rankings, but the surprising result left quite a conundrum.

How should we rank teams 2 through 6 after Wisconsin smashed Nebraska by 39 points in the Big Ten championship game? Wisconsin had a truly great night in Indy and looked like a different team than we've seen all season, but the Badgers still have more losses than Nebraska, Northwestern, Michigan and Penn State.

Oh, the decisions. In the end, this version of the power rankings takes into account the totality of the season. It's a little different from the weekly ones in that sense. Plus, we want to remain consistent with how we voted in the ESPN.com power rankings. As a result, Wisconsin stays at 6 (commence hate mail).

Let's get to it ...

1. Ohio State (12-0, last week: 1): Get used to the Buckeyes occupying the top spot under coach Urban Meyer, who guided Ohio State to its sixth unbeaten and untied season in team history. The big keys entering the offseason are addressing depth issues on the defensive side, finding more consistent playmakers to surround quarterback Braxton Miller and maintaining the standard set this season on the offensive line.

2. Michigan (8-4, last week: 3): Jadeveon Clowney and the South Carolina Gamecocks await Michigan at the Outback Bowl, giving the Wolverines one final chance at a signature victory. Clowney and Wolverines tackle Taylor Lewan face off in a battle of future NFLers. Michigan should benefit from bowl practices as it continues to adjust to having both Devin Gardner and Denard Robinson in the backfield.

3. Penn State (8-4, last week: 4): Penn State won't soon forget the 2012 season or the 2012 senior class, but it's now time to look ahead to an uncertain future. Bill O'Brien and his assistants must be extremely selective with the 2013 recruiting class and future classes, as they can ill afford to miss on more than a few prospects. Penn State loses a lot of star power on defense but has a nice piece to build around at defensive end in Big Ten Freshman of the Year Deion Barnes.

4. Nebraska (10-3, last week: 2): On the cusp of its first league title since 1999, Nebraska tumbled down the mountain yet again. Saturday's loss was an all-time stinker, the worst in team history, according to veteran columnist Tom Shatel. The defense allowed more rushing yards (539) than it ever has, and the offense turned over the ball and didn't find a rhythm until it was far too late. Nebraska will try to rebound against Georgia in the Capital One Bowl.

5. Northwestern (9-3, last week: 5): Will Northwestern finally get the bowl monkey off of its back this year? Pat Fitzgerald's crew has a potentially favorable matchup against slumping Mississippi State in the TaxSlayer.com Gator Bowl. A young Wildcats squad should benefit from bowl practices, as players such as cornerback Nick VanHoose can fully heal. Northwestern's formidable rushing attack faces a Bulldogs defense ranked 70th nationally against the run.

6. Wisconsin (8-5, last week: 6): Yes, we saw what you saw Saturday night. The Badgers were brilliant. And if they follow it up against Stanford in the Rose Bowl Game presented by Vizio, they'll make a serious move up the power rankings. Still, this has been an inconsistent team that now must deal with the stunning departure of coach Bret Bielema to Arkansas. After dealing with so much adversity this season, can the Badgers rally again?

7. Michigan State (6-6, last week: 7): The good news for both the Spartans and their Buffalo Wild Wings Bowl opponent, TCU, is that their upcoming matchup is at a neutral site. Both squads failed to win a conference home game this season. Both squads are also very good on defense and inconsistent on offense. It'll be interesting to see Mark Dantonio and Gary Patterson match wits, and how Michigan State running back Le'Veon Bell performs against a stout Frogs defense.

8. Purdue (6-6, last week: 8): The Boilers have a new head coach in Darrell Hazell, but his impact won't be felt until 2013. An extremely tough matchup against Oklahoma State awaits Purdue in the Heart of Dallas Bowl. Cornerbacks Josh Johnson and Ricardo Allen will be tested early and often, and quarterback Robert Marve and the offense will need to put up big numbers for the Boilers to have a chance against the heavily favored Pokes.

9. Minnesota (6-6, last week: 9): Like Purdue, Minnesota heads to Texas for a bowl matchup in which it is a sizable underdog. And like the Boilers, Minnesota needs its cornerbacks (Michael Carter and Troy Stoudermire) to step up against a very good passing offense in Texas Tech (second nationally). The Red Raiders allowed 111 points in their final two games, but Minnesota's offense has been banged up and struggling and must get healthy this month.

10. Indiana (4-8, last week: 10): It's all about improving the defense in Bloomington, and Indiana has upgraded its recruiting, most recently adding a commitment from defensive tackle Darius Latham, an ESPN 300 prospect who had originally pledged to Wisconsin. The Hoosiers need more depth and more talent on defense to complement what will be a very explosive offense in 2013.

11. Iowa (4-8, last week: 11): Offensive coordinator Greg Davis is staying, and he'll be tasked to upgrade an offense that took a significant step back in his first season. Jake Rudock is expected to step in at quarterback, and Iowa should have good depth at running back (famous last words, I know). The defense returns most of its key pieces and showed the ability to take the ball away this season (23).

12. Illinois (2-10, last week: 12): As expected, coach Tim Beckman will get at least another season to get things right after a miserable first go-round. Staff changes probably are coming as Illinois tries to get back on its feet before spring practice. The Illini lose several NFL-caliber defensive players, but the bigger concerns are with an offense that finished 119th nationally this season.