Oregon freshman Jillian Alleyne appreciated going against Stanford star Chiney Ogwumike, even if it was another loss for the Ducks."It was a great experience to go against Ogwumike because she's a great player and she's known throughout the nation," Alleyne said.Ogwumike had 22 points and 13 rebounds, and fourth-ranked Stanford beat Oregon 86-62 on Friday night for its fifth consecutive win.Ogwumike came into the game ranked sixth in the nation with an average of 22 points, and seventh with an average of 12 rebounds. Her double-double against Oregon was her 16th this season.Alleyne had 13 points and 13 rebounds for the Ducks, her eighth double-double. She currently leads the conference and is ranked 3rd in the nation with an average of 12.9 rebounds per game.She is the first freshman to lead the league in rebounding since Arizona's Shawntinice Polk in 2002-03"I just know I have to keep working hard because I have to do more," Alleyne said. It's great to be No. 1 in the Pac-12 and it's great to be No. 3 in the nation and I'm working hard to be No. 1 in the nation by the end of my freshman year."Joslyn Tinkle had 16 points for the Cardinal (19-2, 7-1), who led by as many as 29 points in their 12th straight victory on the road this season.It was also the 400th Pac-12 victory for Tara VanDerveer, who is the only coach in conference history to win that many league games.The Cardinal are undefeated since a 67-55 loss to then-No. 7 California on Jan. 13 at Maples Pavilion. Stanford's only other loss came against then-No. 2 Connecticut in late December.Stanford, the 12-time defending Pac-12 champion, leads the all-time series 46-8, including the last 16 straight. The Ducks haven't defeated Stanford since the 2005 season.Ariel Thomas added 17 points for the overmatched Ducks (3-8, 1-7).The Cardinal grabbed an early 23-6 lead on Tinkle's layup. Tinkle accounted for 10 points in the first 10 minutes of the game.Ogwumike, the reigning Pac-12 women's player of the week, converted a layup to make it 31-11. But the Ducks responded with a 12-2 run, capped by Ariel Thomas' 3-pointer that trimmed Stanford's lead to 33-23 with 3:43 left in the half.Stanford led 38-27 at the break, and extended its advantage to 51-29 on a 3-pointer from Toni Kokenis. Sara James' 3 made it 71-45 with 6:10 left in the game.The Ducks, under coach Paul Westhead, have struggled with injuries, and were even down to a seven-player rotation at one point earlier in the season. But they got a boost when Liz Brenner returned after missing most of the nonconference schedule while she helped Oregon's volleyball team reach the NCAA championship game.The Ducks, sitting in last place in the conference, broke through for their first Pac-12 victory last week at Washington State. Oregon's only other wins came in nonconference play against Fresno State and Samford.