Southern California starting quarterback Matt Barkley (7) prepares to throw the ball against Arizona during the second half of an NCAA college football game at Arizona Stadium in Tucson, Ariz., Sat., Oct. 27, 2012. (AP Photo/Wily Low)

Associated Press
Southern California starting quarterback Matt Barkley (7) prepares to throw the ball against Arizona during the second half of an NCAA college football game at Arizona Stadium in Tucson, Ariz., Sat., Oct. 27, 2012. (AP Photo/Wily Low)
Southern California starting quarterback Matt Barkley (7) prepares to throw the ball against Arizona during the second half of an NCAA college football game at Arizona Stadium in Tucson, Ariz., Sat., Oct. 27, 2012. (AP Photo/Wily Low)
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