4 losses:
* Ohio State
* Michigan
* Wisconsin
* Ohio State
Every year the Big Ten has a team or two that go undefeated a little deeper into the season than they should, and then completely collapse. Last year it was the Badgers, this year it's Penn State (and probably Wisconsin again, though they look pretty good). Don't get me wrong, there's nothing wrong with being proud of your team, but just don't be disappointed when everything comes crumbling down for them.
