Lia Galdeira scored 17 points, Dawnyelle Awa added 10 and Washington State beat Arizona State 48-41 on Thursday night in the opening round of the Pac-12 Conference tournament.
Galdeira was 7 of 15 from the floor for the eighth-seeded Cougars (11-19), who moved on to face No. 1 seed and fourth-ranked Stanford on Friday.
Janae Fulcher led the No. 9 seed Sun Devils (13-18) with 20 points. Promise Amukamara grabbed 14 rebounds but was just 1 of 12 shooting, part of a 29 percent team effort for ASU.
The Sun Devils led 18-13 at halftime, but the Cougars rallied in the second half, going ahead for good, 29-27, on Sage Romberg's jumper with 14:58 left and building on the lead from there.
Washington State coach June Daugherty missed the game with acute appendicitis. The school said Daugherty was having surgery Thursday evening and was expected to be discharged Friday morning.