Freshman QB Matt Barkley (Fr. 6’2, 230 lbs.) is getting his chance to shine during Southern Cal’s preseason camp as projected started Aaron Corp is nursing a swollen left knee. Corp impressed Pete Carroll during spring ball and was slated to get the starting job over Barkley and Arkansas transfer Mitch Mustain. Now sidelined, the Trojans, for now, have placed Barkley under center. Barkley, so far, has impressed Carroll and QB coach Jeremy Bates. For a player his age,...