PASADENA, Calif. (AP) - Josh Rosen threw for three touchdowns and rushed for one touchdown, and UCLA defeated Arizona 45-24 on Saturday night.

Rosen was 20 of 37 for 350 yards, Kenneth Walker had four catches for 114 yards with a pair of touchdowns and Darren Andrews added 108 yards receiving and a 26-yard TD run.

UCLA (3-2, 1-1 Pac-12) struggled to run the ball for long stretches, but it didn't matter as the injury-riddled Wildcats (2-3, 0-2) saw their offensive ranks further depleted. Quarterback Brandon Dawkins took a big hit from linebacker Kenny Young in the second quarter and was replaced after halftime. Running back Nick Wilson came up limping late in the first quarter.

Touted freshman Khalil Tate came in at quarterback on Arizona's second possession of the second half, leading a drive that ended in a Josh Pollack field goal. Tate's next drive ended with a 31-yard touchdown to Shun Brown. Tate had 72 yards passing and 79 yards rushing in his college debut, throwing a second touchdown to Cam Denson with 38 seconds remaining.