Toby Gerhart rushed for 178 yards and three touchdowns, and Stanford emphatically followed up its 2007 upset at the Coliseum while essentially ending USC's reign atop the Pac-10 with a 55-21 win Saturday, according to an Associated Press report. RealGM Note: Rival coaches Pete Carroll and Jim Harbaugh appeared to exchange some words after the game about Stanford's failed attempt at a two-point conversion after going ahead 48-21 midway through the fourth quarter.