CORVALLIS, Ore. -- The last time Oregon State played Washington, the Beavers were routed 108-68. That wasn't going to happen at home.
"We felt we owed them payback," senior guard J.S. Nash said. "It was an emotional game and I've never lost by 40. It was on a lot of our minds."
The Beavers took over late in the first half and never trailed again to upset No. 11 Washington 90-73 on Sunday at Gill Coliseum.
David Lucas scored 17 of his 23 points in the second half and finished with 10 rebounds for Oregon State.
The Huskies (20-4, 10-3 Pac-10) had their four-game winning streak halted, and quietly departed the floor at Gill as the Beavers and their ecstatic fans celebrated at midcourt.
"They played extremely well," Washington coach Lorenzo Romar said. "We didn't come to fight. We should have come with more fight than we had today.
The Beavers (14-9, 6-6) haven't had as many victories since the 1991-92 season. Oregon State has won three straight overall and raised its record at Gill to 10-1.
"It was a big win for us," Oregon State coach Jay John said. I can't remember the last time Oregon State was 6-6 in the Pac-10 with six to go."
Brandon Roy scored 25 points for Washington, which shot just 41.2 percent from the floor and shot just 4-for-27 from 3-point range.
Llamar Hurd's fast-break layup gave the Beavers an 89-73 lead with less than 2 minutes left, and the crowd was on its feet. The ovation continued until fans spilled onto the court after the final buzzer.
"We were just negligent," Roy said. "We beat them so bad I think some guys thought we were going to cruise for a victory."
When the teams met last month in Seattle, Washington not only routed the Beavers but coach John was hospitalized after complaining of chest pains and shortness of breath at the half.
John was diagnosed with hypertension and missed one other game.
The Beavers played Sunday as if they were determined not to be humiliated again.
Oregon State mounted its challenge late in the first half. Leading 35-34, the Beavers went on a 7-0 run, capped by Chris Stephens' 3-pointer, to make it 42-34. They led 44-37 at the break.
The Beavers picked up their rally in the second half, taking a 52-37 lead on Lucas' layup.
Nick DeWitz's dunk put Oregon State ahead 66-50. A quick 12-5 run got the Huskies as close as 71-62, but the Beavers weren't rattled and moved out to a 76-64 lead on a 3-pointer by Stephens.
DeWitz finished with 20 points, Nash had 18 and Stephens added 17.
"I think everyone on the team played awesome," DeWitz said. "It was 100 percent non-stop."
Tre Simmons was the only other Husky in double figures, finishing with 15 points.
Washington was coming off a 95-88 overtime victory over Oregon on Thursday night. Will Conroy his a 3-pointer with less than a minute left to sent the game into an extra period.
This one, however, got away. Romar took the blame, saying he didn't have his team prepared.
"We can put this one on me. They (the Beavers) played extremely well, but we should have given them a better fight," he said.
The Huskies head to Pullman, Wash., next weekend to face Washington State, before hosting the Arizona schools.
Oregon State was coming off a 58-51 victory over Washington State on Thursday. The Beavers are on the road next week to visit the Arizona teams.
"Now everybody can speculate how we'll do when we go out of town," John said.
Last season, Washington was 0-5 in the Pac-10 before a 103-99 overtime win at Gill Coliseum sparked a 14-2 streak that put the Huskies in the NCAA tournament.
