It's four weeks into the 2010 college football season, and frankly, we've learned absolutely nothing about the Big Ten race. Well, we've learned a little. The main contenders—Ohio State, Iowa, and Wisconsin—are still in the discussion, but some new possible contenders have seemingly joined the chase.

We'll learn a lot more this weekend thanks to marquee matchups such as Iowa-Penn State and Wisconsin-Michigan State.

For now, here's our best guess at the current undefeated teams who will separate themselves as contenders as the season goes on.

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