EUGENE, Ore (AP) -- Ethan Thompson scored 19 points and Warith Alatishe had 14 points and 16 rebounds as Oregon State beat No. 21 Oregon 75-64.
Jarod Lucas added 13 points and the Beavers had a 42-23 rebounding edge in their third straight victory.
Thompson, a senior guard, joined Gary Payton as the only players in school history with at least 1,400 points and 400 assists.
He was 3 for 11 from the field, but made 12 of 14 free throws and scored 14 points in the second half.
Eugene Omoruyi had 15 points and nine rebounds for Oregon, playing without four projected starters.
Freshman guard Jalen Terry scored 13 points.