As for the backup to Irons, Brad LEster, many people don't know that Lester was the starter over Irons going into the Arkansas game last year. Lester had a sever groin injury which basically killed his season. Lester has a propensity for scoring touchdowns and is lightning quick. He just doesn't run over people like Kenny does. We'll also likely see Ben Tate who is a true freshman but graduated early so he could go through spring practice.
you'll probably see a running back by committee...
it's obvious to me that you know the Auburn depth chart much better than I do :)