CORVALLIS, Ore. (AP) Gary Payton II wore his father's retired number and had 13 points, seven rebounds and eight assists to lead Oregon State past Washington State 69-49 on Sunday.
Drew Eubanks added 13 points, nine rebounds and four blocks and Tres Tinkle scored 13 points for the Beavers (17-10, 8-8 Pac-12).
Payton usually wears No. 1, but on Sunday, he donned the jersey No. 20 worn by his father, former Oregon State and NBA great Gary Payton, who was in attendance.
Josh Hawkinson had 14 points and nine rebounds and Charles Callison scored 13 points for the Cougars (9-20, 1-16), who have lost 15 in a row.
Oregon State, which has now won six in a row versus Washington State, outrebounded the Cougars 43-33.
The Beavers also shot 46 percent from the floor, compared to 36 percent for the Cougars.
Oregon State took control early with an 18-2 run, ending with a ferocious Payton dunk, to go ahead 20-6 about 11 minutes into the game. The Beavers forced six turnovers during that stretch.
At the half, Oregon State led 35-25.
Callison made the first basket of the second half, a 3-pointer, and the Cougars trailed 35-28. But the Beavers responded with another 18-2 run, capped by a Tinkle 3-pointer, to take a 53-30 lead with 12:36 left.
The closest the Cougars could get the rest of the game was 17 points.
Washington State: The Cougars haven't won a game since defeating UCLA 85-78 on Jan. 3. . Que Johnson had scored in double figures in eight of the previous nine games, but had seven points on Sunday. . Hawkinson entered the game leading the Pac-12 and was fifth in the nation with 19 double-doubles.
Oregon State: Through Friday, Oregon State's strength of schedule was first in the nation. . The Beavers honored five seniors before the game, including Payton. . Payton leads the Beavers in scoring, rebounding, assists and steals. The only Beaver to do so over the course of a full season was Lester Conner in 1981-82.
Washington State: Plays at rival Washington on Wednesday.
Oregon State: Plays at Southern California on Wednesday.