Notre Dame backup running back Cameron Roberson has two torn knee ligaments suffered in practice and will miss the rest of spring drills after surgery. Roberson, a sophomore from Newbury Park, Calif., was on the scout team last season as a freshman. He tore his lateral collateral ligament and partially tore an anterior cruciate ligament on Saturday. He was supposed to provide depth to Cierre Wood and Jonas Gray. Read more: http://sports.espn.go.com/ncf/news/story?id=6273395