Depth has been a concern at USC ever since the NCAA levied severe scholarship reductions against the program.
A remarkable 23 players sat out of USC's spring game, including such notable names as defensive lineman Leonard Williams and cornerback Josh Shaw.
But nowhere was springtime depth more of an issue than at running back, but the position could be a decided strength for the Trojans come fall—assuming Sarkisian and running backs coach Johnny Nansen ever get an opportunity to work with the full unit.
USC never had a full running back corps with which to operate. Justin Davis is still nursing the ankle that sidelined him midway through last season, Ty Isaac suffered an ankle injury in the spring game, and Javorius "Buck" Allen, the Trojans' late-season star, missed the first portion of practices.
Allen told Rahshaun Haylock of FoxSports.com that sitting out was a struggle: "I hate sitting out, man. I love the game of football. It's my life. I feel without football, I wouldn't be here so I hate sitting out. It ate me up so much to see my guys suffer when I can't be on the field."
USC's backfield depth will rival Oregon as the Pac-12's deepest, but first it needs to have everyone healthy at the same time.
Statistics compiled via CFBStats.com. Recruiting rankings and information culled from 247Sports.com.