LOS ANGELES (AP) -- Three Southern California players have been declared out for the season with injuries, further depleting the NCAA-sanctioned Trojans' shaky depth. Cornerback Devian Shelton, offensive tackle Zach Banner and defensive end Greg Townsend Jr. won't play for the Trojans this year, coach Lane Kiffin said after practice Thursday night. The 6-foot-9 Banner will need hip surgery, Kiffin says. The freshman redshirted last season and joined the men's basketball team, although he didn't play. Townsend was a backup defensive end last season as a redshirt freshman. He needs surgery on his knee. Shelton is a freshman who redshirted last season. He needs foot surgery. USC (3-1) is traveling to Arizona State with just 56 recruited scholarship players. Tailback Silas Redd is traveling. He hasn't played this year with a knee injury.