<!–start image–><!– end image–>When USC reflects upon the 2007 season, it is doubtful the Trojans will spend much time thinking about Mitch Mustain and Damian Williams, a pair of Arkansas transfers who had to sit the year out. Still, in their final opportunity, the two hooked up to give the team something to remember. Other scrimmage standouts: Allen Bradford, Marc Tyler and the first-team defense