Ariya Cook scored 17 points and Cassie Harberts had 16 points and 14 rebounds Thursday to lead seventh-seeded Southern California to a 64-57 victory over 10th-seeded Oregon State in the first round of the Pac-12 women's tournament.

Christina Marinacci added 13 points for the Trojans (11-19), who advanced to the quarterfinals where they will play No. 5 California, the Pac-12 co-champs.

USC was 35 of 46 from the free-throw line while Oregon State was 7 of 12. That helped the Trojans overcome 29 percent shooting; the Beavers made 36 percent of their outside shots, including 44 percent from 3-point range.

Ali Gibson scored 13 points to lead the Beavers (10-21). Mollee Schwegler scored 12 points on four 3-pointers, and Jamie Weisner and Alyssa Martin scored 10 apiece for Oregon State.