Julian Jacobs scored 17 points and USC led all the way in an 80-61 victory over UCLA on Thursday night at the Galen Center.
The Trojans' 14th consecutive home victory moved them into a tie for second in the Pac-12 Conference.
Elijah Stewart added 16 points and Katin Reinhardt had 13 for USC (18-5, 7-3), which tied idle Washington in the standings.
The Trojans equaled the second-longest home winning streak in school history and are off to their best start since 1991-92, when they were 18-4.
Aaron Holiday led UCLA with 15 points before fouling out in the closing seconds.