Article Photos: Oklahoma football: Sooners' defensive backfield lacks depth 30/57

Don Caudill (84) runs between Caleb Gastelum (45) and Kass Everett (23) after a catch during the annual Spring Football Game at Gaylord Family-Oklahoma Memorial Stadium in Norman, Okla., on Saturday, April 13, 2013. Photo by Steve Sisney, The Oklahoman