Week 4 of the college football season has come and gone. Here's the updated US LBM Coaches Poll and AP Top 25 poll ahead of Week 5:

Ohio State, Penn State, Indiana, Maryland, Iowa, Rutgers, and Illinois prevailed in Week 4, while Purdue, UCLA, MSU, Nebraska, and Minnesota failed. Oregon and Wisconsin were on bye this week. With all of that in mind, here is our revamped Big Ten power ranking after Week 4. Last game: Loss vs. Oregon State, 21-38

The Wolverines grinded out a win over the Trojans, plus the rest of the weekend’s most notable winners and losers.

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.

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.

College football Week 4 saw Michigan upset USC and other results that will impact today's updated AP poll and Coaches Poll. Here's who should move.

Games like USC-Michigan will help college football fans adapt to the demise of the Pac-12. The 11th-ranked Trojans and 18th-ranked Wolverines played a regular-season game for the first time in 66 years and it was an instant Big Ten classic.