In Week 4 of the college football season, the matchups provided the first big glimpse of the premier teams in their new conferences. The USC Trojans began Big Ten play on the road against the Michigan Wolverines while the Oklahoma Sooners began their inaugural season in the SEC with a visit from the Tennessee Volunteers.

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.

Yahoo Sports' Caroline Fenton reacts to the Wolverines' 27-24 win over the Trojans and discusses Michigan's issues under center. Subscribe to the “College Football Power Hour” podcast on Apple Podcasts,