Raiders coach Tom Cable realizes that he doesn't have an elite running back on his roster, which means he'll likely use a tandem system this season. Cable was hoping to identify a lead back, but Darren McFadden and Michael Bush have been neck-and-neck in workouts. "I think they're both doing something exciting each day, whether it's running the ball or pass protecting," Cable said. "Each one of them has their own strength but they both show up every time we come out here. I actually think their both (No. 1s) and I think it's a great deal we got going here."