Freshman starters Faaesea Mailo and Chris Claiborne got high marks for their first appearances against Houston last Saturday.
Mailo, a 350-pound offensive tackle, started at left guard for injured Chris Brymer, and Claiborne started at middle linebacker for Taso Papadakis, who needed to rest a sore ankle and knee.
Mailo played well, said offensive line coach Mike Barry, and Claiborne showed "major improvement," according to Coach John Robinson.
USC is in the middle week off of its first season with three open dates since 1935. After playing three of its first four games out of state, the Trojans have two Coliseum games next, Cal on Oct. 5 and Arizona on Oct. 12.
The Trojans had an open date after the Kickoff Classic on Aug. 25 and will have another Nov. 16, between the Stanford and UCLA games.