USC was counting on better pass defense this season. But because of questions at the cornerback spot opposite Nickell Robey, that hasn't happened yet.
USC's bye week will be critical for its defense, which hopes to unearth some impact players and get other players healthy.
Anthony Brown could get first career start Saturday in place of injured Torin Harris, faces tough test in Nick Foles and Arizona.
USC shows there is more to its passing attack than throwing to Robert Woods; young players make positive first impressions.
Devon Kennard is feeling at home at his old position while several Trojans are expected to make season debuts Saturday.