He just ran for a 70 yard TD tonight. He has to be the best player running the ball in the NCAA. His passing is coming along and barring an injury, a Heisman trophy is certainly in his future. I don't know how defensive coordinators can possibly prepare for him.
I think it's actually quite simple for a defensive coordinator to stop him. 2 QB spies, let all the DBs cover all the WRs except for Devin Smith, and pray that Smith drops it like he does 80% of the time.