Washington State (23-5, 12-4 Pac-10) also got 10 points from 'Iolani alum Derrick Low, the team's leading scorer. Low hit of 4 of 10 field-goal attempts, including 2 of 4 3-pointers. He also had three rebounds.

Washington State was coming off a 64-59 loss to No. 23 Oregon on Thursday. The loss slimmed the Cougars' chances of catching UCLA in the conference race.

The No. 4 Bruins clinched at least a share of the Pac-10 after today's 75-61 victory over Stanford put them at 14-2. The Cougars host UCLA on Thursday, before closing out the regular season on Saturday against USC.

Washington State, which trailed by as many as eight points in the second half, pulled ahead when Aron Baynes scored eight straight points to give the Cougars a 47-45 lead.

The Beavers stayed in the game, and tied it at 54 on Wesley Washington's layup with 1:02 left. The Cougars took back the lead on Hopson's jumper.

After Oregon State's Josh Tarver missed a 3-point attempt, Baynes made a pair of free throws with 8.7 seconds left.

Baynes led the Cougars with 14 points.

Oregon State (11-19, 3-14) was coming off a 73-65 victory over Washington on Thursday. The Beavers' only conference victories have come against the Huskies and Arizona State.

Marcel Jones had 16 points for the Beavers, who had won eight straight against the Cougars at Gill Coliseum. The 273 meetings between the two teams are the fourth-most between a pair of teams in NCAA Division I.