Jamelle Horne added 15 points on 5-for-5 shooting for the Wildcats (10-5, 1-2 Pac-10). No player reached double figures for the Ducks (6-9, 0-3), and as a team shot 37 percent.
Oregon was 4-for-22 on 3-pointers, and two of ones that went in came 1 1/2 minute with the outcome long since determined.
Budinger, who had shot 24 percent (12-for-50) in his previous four games, still struggled from outside, going 1-for-5 on 3s, but he was 7-for-10 inside the 3-point line.
Michael Dunigan and Matthew Humphrey scored nine apiece for Oregon.
The Ducks' leading scorer for the season, Tajuan Porter, finished with two points. He made just one of seven shots and was 0-for-4 on 3s.
Jordan Hill had nine points and 12 rebounds for Arizona. He had six points and 10 boards in the first half, when the Wildcats built a 30-19 lead.
Official Box Score
Ducks Fall in Desert
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