Sage Romberg hit a jumper with 2 minutes, 10 seconds left in the second overtime Saturday to give Washington State the lead before Tia Presley and Jazmine Perkins hit free throws down the stretch and the Cougars pulled out a 61-54 victory over Oregon State at Corvallis, Ore.
Perkins finished with 11 points and 15 rebounds for Washington State which defeated Oregon 75-47 on Thursday.
The Cougars (8-6) improved to 2-0 in Pac-12 Conference play for the first time since the 2000-01 and swept a conference road series for the first time since beating Arizona and Arizona State in the 1994-95 season.
Patricia Bright had 13 points and nine rebounds for Oregon State (10-3, 1-1), which went ahead 47-44 in regulation after a pair of free throws by freshman Ali Gibson. The Cougars pulled to a tie after Rosetta Adzasu made a layup and a free throw.
April Cook’s jumper gave Washington State a 51-50 lead in the first extra period, but Bright’s free throw tied it again to set up the second OT.
The Cougars return to Pullman to begin a three-game homestand, hosting Pac-12 newcomers Utah and Colorado on Thursday and Saturday, respectively.
Oregon State was coming off a 60-55 victory over Washington in the conference opener on Thursday.
Oregon 88, Washington 86: Sophomore Deanna Weaver made a 3-pointer with 15.4 seconds left to lift the Ducks (9-5, 1-1) to a come-from-behind victory over the Huskies (8-4, 0-2) at Eugene, Ore.
Oregon trailed 86-84 when Weaver hit the 3 to give Oregon its first lead since midway through the first half. Nia Jackson tacked on a free throw with 0.8 seconds left for the final margin.
Weaver finished the game with 13 points, while senior Ariel Thomas had 21 points and seven rebounds for Oregon, which trailed by as many as 14 points in the second half.
Kellie McCann-Smith led Washington with a career-high 26 points, including six 3-pointers, while Mackenzie Argens had 18 points and nine rebounds.
Washington trailed for much of the first half but surged ahead when McCann-Smith scored 11 points in three minutes and led 47-36 at the break.