PULLMAN, Washington (Ticker) -- Reggie Bush was stuffed for a loss while going in for a touchdown on the final play of the first half. That was just about the only thing that went wrong for Bush and Southern California against Washington State.
Bush both ran and returned a punt for a score in the first quarter as the top-ranked Trojans jumped out to a huge lead and cruised to a 42-12 Pac-10 Conference victory over the Cougars.
Matt Leinart completed a pair of touchdown passes to freshman Dwayne Jarrett and LenDale White ran for two scores for USC (8-0, 5-0 Pac-10), which has won 17 straight games, including 11 in a row in league play.
After Washington State failed an onside kick attempt to begin the game, Bush opened the scoring on a 19-yard run less than two minutes later.
"That was my fault," Cougars coach Bill Doba said. "We tried to take a chance early. We thought their tackle was leaving early. Loren Langley was onside kicking it great all week."
The Trojans tried an onside kick of their own and were successful, and two plays later, White scored on a one-yard run. Bush opened a 21-0 cushion with a 57-yard punt return with 7:22 left in the period.
"He is an awesome athlete," Cougars linebacker Pat Bennett said of Bush, who had three punt returns for 78 yards, 11 carries for 55 yards and five catches for 23. "He has that speed to where even if you think you have him, he can give you a little juke and he is gone."
Leinart added a 43-yard strike to Jarrett and White a seven-yard TD run to make it 35-0 before Bush was stopped shy of the goal line just before the break.
"We came out of the shoots just fine," USC coach Pete Carroll said. "I'm really excited about our ability to jump on the opportunities and maximize them early in the game. We really took the game over very early."
Leinart, who finished 23-of-28 for 235 yards, exited after tossing a five-yard TD to Jarrett with 8:39 left in the third quarter, but re-entered the contest early in the fourth after sloppy play by backup Matt Cassel.
Alex Brink went 17-of-40 for 165 yards and a touchdown for the Cougars (3-5, 1-4), who had split the previous six meetings.
"Their defensive line was very good," Brink said. "When you have a defensive line like that, you can do a lot of things. They have a lot of athletes on that side of the ball."
USC gained 186 yards on the ground and held Washington State to minus-9.
"We tried to run the ball, but it is hard to run when the defensive tackle is in the backfield," Doba said. "I was afraid of their defensive tackles and the defensive line and they did a nice job."
The Trojans outgained the Cougars, 421-156. Washington State had not been held under 200 yards since Colorado did so in 1996.