TUCSON, AZ (AP) - Allonzo Trier scored 25 points, Deandre Ayton added 24 and No. 17 Arizona used a late run to outlast Oregon 90-83 on Saturday.
Arizona (14-4, 4-1 Pac-12) grinded out a defense-dominated win over Oregon State on Thursday. It was all about the offense on Saturday, two long, athletic teams trading runs throughout an entertaining game.
Arizona had the last one, scoring eight straight points to go up 84-77 with 72 seconds left. The Wildcats shot 53 percent from the field.
Oregon (12-6, 2-3) rallied from double-digit deficits three times, but couldn't muster a final comeback to leave the desert with a split between the Pac-12's two Arizona schools.
Elijah Brown scored 25 points and MiKyle McIntosh had 20 for the Ducks.
Oregon had been in a funk before this week, losing two of its first three Pac-12 games, including a disheartening 76-64 setback against rival Oregon State.
The Ducks bounced back on Thursday with a strong all-around game, knocking of No. 11 Arizona State 76-72 for their first win as an unranked team against a top-11 team in 41 years.
Oregon dominated the Sun Devils in the paint, outscoring them by 22 inside while grabbing 15 offensive rebounds.
Arizona, with Ayton and fellow 7-footer Dusan Ristic inside, was literally a much bigger challenge and the Wildcats played it to their advantage early.
Working the ball inside for shots at the rim and kickouts, the Wildcats jumped on the Ducks after opening with consecutive turnovers. Arizona hit its first six shots and blew past Oregon with a 17-2 run to go up 21-9.
The Ducks rallied after Arizona State went on a big first-half run and did the same thing against Arizona - twice. The second one, 12-0, pulled them within 32-31.
Arizona led 41-38 at halftime after both teams shot at least 50 percent.
The Wildcats kept the run trend rolling, scoring eight straight points to go up 51-40 early in the second half. Oregon took its turn, tying the game at 55-all.
Oregon may have lost, but a road win at Arizona State and taking Arizona to the wire at McKale Center could be just what the Ducks need to get some traction after a slow Pac-12 start.
Arizona proved it can win with defense and offense in beating the two Oregon schools this week.
Oregon plays California on Thursday and Stanford next Saturday.
Arizona heads to Southern California to face USC on Thursday and UCLA next Saturday.