Updated Sunday, December 16, 2012 at 12:31 AM
PULLMAN — Lia Galdeira scored 13 of her 15 points in the second half to help Washington State upset No. 20 Ohio State 62-55 Saturday.
Washington State's defense forced 21 Ohio State turnovers — leading to 16 Cougars points — and held the Buckeyes to 1-for-17 shooting from three-point range.
"Exciting day for Washington State, after a tough road trip and back-to-back losses, the girls responded and came out and played physical and aggressive," said Cougars coach June Daugherty, a former Washington Huskies coach. "Tonight we had some hustle plays that really mattered. I give all the credit to our defense."
Washington State (3-5) led 28-23 at halftime.
Ohio State came back to lead 36-32, but the Cougars' defense forced three straight turnovers. Taylor Edmondson's three-pointer put the Cougars ahead to stay at 40-37 before a crowd of 700.
The Cougars posted their first victory over a ranked team since 2001.
"We gave this team a lot of different looks on defense, which created turnovers, and they were just not comfortable with it," Daugherty said.
Daugherty was a standout player at Ohio State in the 1970s, when she was June Brewer.
Tayler Hill had 14 points for Ohio State (6-3), but missed all nine tries from behind the arc.
"Washington State pressured us defensively and none of our guards responded to the challenge. Top to bottom," Buckeyes coach Jim Foster said. "We needed to come out and play hard from the start and we didn't do that."
Other Pac-12 games
At No. 1 Stanford 78, Pacific 43
Chiney Ogwumike scored a career-high 31 points and added 13 rebounds as the Cardinal (9-0), playing its first game in 13 days, beat the Tigers (7-2).
Ogwumike had her sixth consecutive double-double.
"I just enjoy playing and doing everything I can to make us look good," she said.
No. 14 UCLA 76,
Saint Mary's 62
Markel Walker collected 15 points and 12 rebounds to help the Bruins (6-1) beat the Gaels (6-3) in the St. John's Holiday Classic in New York.
UCLA will face St. John's for the tournament title Sunday.
No. 23 Texas A&M 79,
at USC 61
Kelsey Bone and Kristi Bellock scored 15 points each as the Aggies (6-3) beat the Women of Troy (3-5).
Cassie Harberts led USC with 19 points and eight rebounds.
At Loyola Marymount 73, Oregon St. 62
Hazel Ramirez scored 16 points as the Lions (6-5) defeated the Beavers (6-4).
Ali Gibson scored 21 points on 8-for-14 shooting for Oregon State, which made 30 turnovers.
At Utah 71,
Houston Baptist 33
Taryn Wicijowski and Michelle Plouffe scored 16 points each as the Utes (8-1) cruised past the Huskies (2-9).