Joseph Young scored 25 points as Oregon took a commanding lead early and held off archrival Oregon State for a 93-83 win on Sunday in Eugene.
Mike Moser added 15 points and grabbed seven rebounds for Oregon (16-8, 4-8 Pac-12), which had five players in double figures.
Eric Moreland led Oregon State with 17 points and 10 rebounds, while Roberto Nelson scored 18 for the Beavers (13-11, 5-7 Pac-12). Oregon State now has lost three in a row.
The Ducks started the game shooting a blistering 12 of 16 from the floor and led 31-12 after a Jason Calliste 3-pointer at the 10:39 mark. Oregon went 7 for 7 on 3-pointers during the stretch, with Moser making three.
Oregon State responded with a 15-3 run, making the score 34-27 after a Nelson breakaway layup with 5:13 left in the half.
The Ducks pulled away and took a 45-35 advantage into the break.
In the second half, the Beavers twice trimmed the lead to two points, the latter when Hallice Cooke sank two free throws to make the score 72-70 with 5:11 remaining.
Missed shots and offensive fouls on two straight possessions doomed any hope of a comeback for the Beavers, and the Ducks went on a 9-0 run capped by another Calliste 3-pointer with 2:51 left.
Oregon made 12 of 14 free throws in the final 2 minutes to seal the game.
The Ducks were 11 of 21 on 3-pointers.
The Beavers hit 5 of 16 from beyond the arc. Long-range shooting has been a strength for the Beavers this season. Oregon State entered the game ranked first in the Pac-12 and fifth in the nation for 3-point shooting at 41.4 percent, which was on pace for a school record.
No college basketball teams have played more against each other than the Ducks and Beavers, who met for the 341st time on Sunday. Oregon State leads the series 185-156.
Colorado 83, USC 74: Xavier Johnson scored 20 points and the visiting Buffaloes (19-7, 8-5 Pac-12) completed a season sweep of the Trojans (10-15, 1-11).
Five players scored in double figures for the Buffaloes.
This is the school’s best start after 26 games since the 1996-97 squad opened 19-7 and ended up in the NCAA tournament. But the Buffaloes are 5-4 since leading scorer Spencer Dinwiddie’s season ended because of a torn ACL that occurred on Jan. 12 at Washington.
Byron Wesley scored 21 points for the Trojans, who are last in the conference under first-year coach Andy Enfield. Their only victory against a Pac-12 opponent was Jan. 22, when they beat California 77-68 at home.