Devon Collier's 19 points led five Oregon State players in double figures in a 92-66 victory over Chicago State on Wednesday night.
Roberto Nelson scored 16 points and Jared Cunningham 15 for the Beavers (10-2) in their final nonconference game of the season.
Ahmad Starks added 13 points and Angus Brandt 10, while Joe Burton had 11 rebounds.
Lee Fisher and Jeremy Robinson had double-doubles for the Cougars (0-12). Fisher had 17 points and 12 rebounds, and Robinson scored 13 points with 15 boards. Clarke Rosenberg added 14 points.
Oregon State held a huge shooting edge, hitting 33 of 64 (51.6 percent) to Chicago State's 22 of 74 (29.7 percent).
The Beavers led 11-7 before a 14-2 run made it 25-9 with 10:55 left in the first half. Oregon State increased its advantage to 50-24 at intermission and was never threatened thereafter.
