USC is definitely a contender to win a national championship in 2012, as they return a Heisman favorite in quarterback Matt Barkley and are just absolutely loaded on offense. However, if there's one possible downfall for this Trojans team it's a defense that doesn't have a lot of depth.

CBSSports.com's Bruce Feldman joined the Tim Brando Show on Friday to talk about just that and other areas of the Trojans defense.