EUGENE, Ore. -- Sisters Chiney and Nnemkadi Ogwumike combined for 18 points and 11 rebounds in the first half for No. 4 Stanford, the midpoint of what became a 35-point victory for the Cardinal.
It still wasn't enough for Stanford coach Tara VanDerveer.
"They were missing some easy shots," VanDerveer of her two starting post players. "But they stayed with things really well."
Chiney Ogwumike finished with 18 points and 12 rebounds, Nnemkadi Ogwumike added 16 points and eight rebounds and the Cardinal handed Oregon its most lopsided loss of the season in a 91-56 victory Thursday.
Kayla Pedersen had 11 points and 14 rebounds for the Cardinal (17-2, 8-0 Pac-10), Sarah Boothe had 16 points and eight rebounds and Jeanette Pohlen also scored 17.
"Coach Tara just emphasized to us to be aggressive and just keep my head up," Chiney Ogwumike said. "It felt like there was a lot of congestion in the paint and they were doing a great job once I got the ball. I just tried to be aggressive."
Chiney Ogwumike, a 6-foot-3 freshman, finished 8 for 18 from the field and also had three of Stanford's season-high 10 blocks. Nnemkadi Ogwumike, a 6-2 junior, was 4 for 10 from the field but made 8 of 13 free throws.
Stanford handled Oregon inside. It set a season high with 68 rebounds to 32 for the Ducks, scored 52 points in the paint and had 24 points off 25 offensive rebounds.
"We have a big team, and we should rebound well," VanDerveer said. "I think it was a combination of us being a very good rebounding team and them missing a lot of shots that they ordinarily make."
The win was the 11th straight for Stanford since losing in overtime to Tennessee on Dec. 19. It was also its 12th straight win against the Ducks (12-7, 3-5), who got 21 points from Nia Jackson and 15 points from Amanda Johnson.
Oregon made just 3 of 32 3-pointers and shot a season-low 25 percent from the field overall.
"They got some offensive rebounds, that's one of their strengths as a team," Johnson said. "We didn't necessarily counteract that in the best way."
The last time these teams met on Feb. 18, 2010, the Cardinal won by the largest margin in the history of the rivalry 104-60. On Thursday, they came close to setting a new standard.
Stanford jumped out to a 19-1 lead in the first half and led 41-25 at halftime.
Meanwhile, the Ducks missed their first 15 shots of the game before Johnson scored on a putback with 10:21 to play in the half. Though the Ducks heated up late in the first half, they never were able to cut their deficit to less than 11 points and went into the break 1 for 17 from the 3-point line.
The Cardinal pounded the ball inside to the Ogwumike sisters to start the second half and the two forwards combined to score Stanford's first 16 points of the half as the Cardinal extended their lead to 57-27 with 14:57 to play.
From there the rout was on and Stanford pulled its starters with 7:01 to play.
"Our No. 1 team goal is to be aggressive, and I thought we needed to go inside and take it at them more and not just settle for perimeter shots, which we were a little bit," VanDerveer said.
Cardinal freshman guard Toni Kokenis, a key reserve, was ruled unavailable for the game following shootaround earlier Thursday.
Kokenis also didn't dress Saturday against Southern California after getting fouled in the head in the closing minutes of last Thursday's win over UCLA. She experienced slight headaches Friday and didn't practice, then was evaluated Saturday. The school said she didn't sustain a concussion but was being held out as a precaution. Kokenis had been expected back for games at Oregon and Oregon State this week.