No. 18 Michigan is going with a new starting quarterback when it opens Big Ten play against Southern California on Saturday in Ann Arbor.Head coach Sherrone Moore announced Monday that Alex Ojri will start for the Wolverines (2-1) against the No. 11 Trojans (2-0). Orji replaced Davis Warren in last weekend’s 28-18 win over Arkansas State.Moore said Monday that he’s “excited” for Orji, adding, “I know he’s champing at the bit.”Warren threw three interceptions against the Red Wolves before being replaced. Orji, meanwhile, completed 2 of 4 passes for 12 yards and a touchdown. He also rushed for 27 yards on three carries.”Davis was playing good, but you can’t have those turnovers,” Moore said. “Orji went in there and did a good job, missed the one throw, but thought he controlled the offense pretty well. We’ll go from there.”