As we head into the offseason, here are three questions facing Oklahoma:
1. Who takes over as the primary running back?
Nobody in the Big 12 lost more talent in the backfield than Oklahoma, which will be replacing a pair of All-Big 12 rushers in Samaje Perine and Joe Mixon. The Sooners still have Baker Mayfield behind center. But they'll need somebody to take the bulk of the work at running back.
The solution could come in-house. Or from the incoming recruiting class. Or a combination of both.