PULLMAN, Wash. -- California coach Joanne Boyle was troubled by the No. 3 Bears' high number of turnovers in their rout of Washington State.
The Bears committed 22 turnovers even as they pounded Washington State 77-57 to remain in first place in the Pacific-10 and win their 12th straight game.
"That's too many," Boyle said. "We made it too easy for Washington State to score."
California (20-2, 11-0 Pac-10) jumped to a 16-5 lead, but then frittered most of that away with sloppy play that allowed the Cougars to close to 23-21.
Lauren Greif's 3-pointer broke WSU's momentum, and the Bears outscored the Cougars 20-7 the rest of the half for a 43-28 halftime lead. Cal shot 63 percent in the first half, while WSU was shooting just 34 percent.
The Bears scored the first seven points of the second half for a 50-28 lead and coasted to a 12th straight win that extended their school record.
Ashley Walker, leading scorer in the Pac-10, scored 18 points and grabbed 11 rebounds in just 24 minutes. Walker's 11 rebounds gave her 1,002 in her career, second to Colleen Galloway's team record of 1,029 set in 1981.
"It's very cool," the 6-foot-1 senior said of her 1,000th rebound. "It's something that hasn't been done in a very long time."
Walker made 8-of-13 shots and added seven assists. Devanei Hampton chipped in 15 points and Alexis Gray-Lawson added 11 for the Bears. Cal shot more than 60 percent most of the game before cooling off at the end to finish at 53 percent, including 8-of-14 3-pointers. They held Washington State to 34 percent shooting in the game.
Boyle was able to clear her bench after her team got up by 30 in the second half.
"It's very important to get the seventh, eighth and ninth players in the game," Boyle said. "They sacrifice every day in practice. Down the road it's going to be so important for those young girls to have minutes."
Washington State was outrebounded 43-32.
They were led by 22 points from freshman April Cook, who scored 17 of those in the second half. Heather Molzen added nine points and eight rebounds.
"Wow, rough weekend," said WSU coach June Daugherty, whose team lost by 30 to No. 7 Stanford on Friday.
Washington State (9-13, 2-9) fell to the Bears for the ninth consecutive time.
The Cougars start three freshmen, and Daugherty was proud of them for staying in the game even as the deficit grew.
"They used it as a learning tool," Daugherty said. "A weekend like this is a great weekend for a team like us. We are learning what it takes to win. We want to climb there."
Cook said her teammates remain confident that their potential will be realized. It was also a pleasure to play against a great team like Cal, Cook said.
"They are so good, they make us all better every time we play them," Cook said.
California's next game is a rematch next Saturday against Stanford, a team they beat 57-54 earlier this season.