"That's just a representation of who we are," Michigan football running back Kalel Mullings said after powering the game-winning drive over USC.

No. 18 Michigan inflicted a pair of significant blows in the first half against No. 11 USC on Saturday, taking a 14-3 lead into the break behind stingy defense and explosiveness in its run game. Kalel Mullings busted a 53-yard touchdown run on the Wolverines' third possession to open the scoring after the teams traded early punts.

There are highs and lows every week in college football. The winners and losers for Week 4 start with Southern California's loss to Michigan.