Scout.com > USC Sanchez Named Starter Story URL: http://usc.scout.com/2/694745.html Kevin Carden SCPlaybook.com Oct 25, 2007 USC head coach Pete Carroll announced after Thursday's practice that sophomore Mark Sanchez will start at quarterback for the Trojans this Saturday. USC head coach Pete Carroll announced after Thursday's practice that sophomore Mark Sanchez would start at quarterback for the Trojans this Saturday when they face the Oregon Ducks at Autzen Stadium.  "We got it real clear in our minds what we are doing; Mark is going to start," said Carroll. "John had a great week, but we decided this afternoon that we would go in this direction. I think for all the right reasons. To give John David (Booty) another week to get well." Booty didn't throw at practice on Thursday but will be available to play this Saturday. Copyright © Scout.com and SCPlaybook.com