Key Matchups: No. 18 Michigan vs. No. 11 USC

Head coach Sherrone Moore announced a shakeup at quarterback ahead of the top-25 matchup this weekend: Alex Orji will get the start for the Wolverines in Week 4. He’s just 3-of-6 for 15 yards in the air, with two touchdowns, and has 10 carries for 58 yards on the ground.

USC Head Coach Lincoln Riley did what he needed to do in the offseason, hiring D’Anton Lynn as his defensive coordinator. The Trojans’ defense played well against LSU the opening weekend — while the Tigers ended the game with 421 total yards, USC held them to 117 rushing yards, and LSU was just 5-of-13 on third down.

That defense was even more impressive against Utah State, who only managed 190 yards of total offense, picking…