He went down on his shoulder on a tackle like Bradford but it didn't look nearly as bad. He did say he jacked his shoulder up but he seemed to shake it off to a point.
Even if Corp starts, USC's offense will hardly suffer for it. Corp has legs and Barkley doesn't. Corp also had a mistake free camp. Almost won the job but he got dinged up which left the door open for Barkley. Now what? In a gambling sense it's no major issue. UW is a solid dog with either of them starting.