Jon Brockman had 14 rebounds for Washington (20-7, 11-4 Pac-10), which leads the conference standings. Arizona State (9-4) plays Sunday, while California (9-5) and UCLA (9-5) both lost Saturday.
Dwight Lewis and Daniel Hackett each scored 11 points for USC (16-10, 7-7), which has lost four of its last five games. Taj Gibson added in 10 points for USC, which held a four-point lead with less than 6 minutes to play.
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