Freshman quarterback Carson Palmer came off the bench to guide Southern California to two second-half touchdowns and a field goal Sunday for a 27-17 victory over Purdue in Paul Hackett's Trojan coaching debut.

On a sweltering afternoon in the Coliseum, Chad Morton scored on a 98-yard kickoff return early in the game, then sealed the victory with a 13-yard touchdown run with 3:02 left in the season-opening Pigskin Classic matchup.Temperatures on the Coliseum field reached 110-plus degrees and several USC band members, a cheerleader and a number of fans fainted from the heat. The crowd of 56,623 also thinned out considerably as the game wore on, with about a third of the fans remaining in their seats by the middle of the final quarter.

Palmer, who replaced starter Mike Van Raaphorst with the Trojans trailing 17-10 early in the third quarter, needed just two series to help put his team ahead.