You might want to check again...Ingram is our starting back and if he is hurt..PT gets the start. Sproles is the third down utility guy and Ivory brings power and speed as teh 4th back...when Ingram went down Ivory took over the heavy lifting though PT and Sproles worked there magic most of the game until it was time to bring in Ivory to run the clock out....ypc is not an indication of who is the starting back...Coaches make that decision not ypc averages and Payton annointed Ingram his lead back.