CORVALLIS, Ore. (AP) - Ali Gibson and Jamie Weisner had 14 points apiece and Oregon State used a 16-3 second-half run Sunday to pull away from Oregon for a 68-49 win.
Sam Siegner came off the bench and added 10 points for Oregon State (9-9, 3-3 Pac-12), which beat its rival for the second time in six days.
Liz Brenner and Danielle Love had nine points apiece for Oregon (2-16, 0-6), which has lost eight consecutive games. Brenner also had seven rebounds.
Oregon State saw a 14-point lead shrink to three at halftime, but the Beavers opened the second half with a 7-2 run to go ahead 36-28.
The Beavers later got consecutive 3-pointers by Weisner and Alyssa Martin to go up 44-34.
Siegner scored four straight points to start the Beavers' decisive 16-3 run. Gibson finished it with a 3-pointer, giving Oregon State a 60-40 lead with 4:42 remaining.
The Beavers led by as many as 23 in the closing minutes.
"I didn't care for how we performed once we got our lead (in the first half), Oregon State head coach Scott Rueck said. "I felt we put a great second half together."
Gibson added five assists and four rebounds. Deven Hunter and Martin had eight rebounds apiece for Oregon State, which shot 25 of 53 from the field for the game.
Oregon shot 16 of 62.
"We had open shots we missed," Oregon head coach Paul Westhead said. "Making shots keeps you in the flow and minimizes miscues or good play by the other team."
Oregon State got the quick start, scoring the game's first 11 points.
The Beavers would eventually lead by 14, at 24-10, on Mollee Schwegler's two free throws with 7:30 left in the first half.
Oregon climbed back into the game with a 12-1 run late in the half.
Love scored five points in that stretch, and Jordan Loera hit a 3-pointer at 2:41 in the half, getting the Ducks within 25-22.
Oregon State led 29-26 at halftime.
"In the second half we just tried to come out with intensity and finish the game strong," Gibson said.