Looking at the UK game, the first big play was a missed tackle by a backup that arguably would have been made by the starter. However, the second big play was an absolutely perfect throw and catch and would have been tough to defend by anybody.
Watching the Auburn game, they were actually able to run against our second team defensive line, and we generally subbed the first teamers back in in the red zone. This is what I'd be looking at against Arkansas. Will they suddenly be able to move the ball on the ground a little better against our 1b DL. They have some really impressive running backs.