True freshman Matt Barkley will be USC's Starting QB in the opener against San Jose State on Sept. 5, but it remains to be seen what happens after that, particularly at Ohio State the following weekend.
Sophomore Aaron Corp was named the No. 1 quarterback after spring practices and he seemed to be holding onto his lead during the early days of preseason camp.
While Barkley owns a better arm, Corp made fewer mistakes and his speed also added an intriguing dimension.
But Corp suffered a fracture of his left fibula on Aug. 10 and didn't return to practice until Tuesday.
He's been fitted with a custom leg brace and hasn't fully recovered his mobility.
"Aaron has done a marvelous job of getting back from his injury," head coach Pete Carroll said on his Web Site."By next Saturday, we'd expect him to be ready to play if needed, but he's not ready yet. The competition will continue at this position, but at this point, Barkley is our starting quarterback."
Barkley, who is just 18, will be the first true freshman to start a season opener at quarterback for the Trojans.