Dylan Ennis scored 18 points and No. 23
Tyler Dorsey added 17 points for the Ducks (5-2), who came back from 14 down in the first half to win their 28th straight home game.
After Dorsey's free throw gave Oregon a 66-63 lead, the Broncos had a chance for a tying shot, but Paris Austin lost possession on a baseline drive with 5 seconds left. Dillon Brooks sealed the win with two free throws.
No. 18 Butler 68, at
The loss was the first of the season for Utah, which was led by Kyle Kuzma with 21 points and 10 rebounds.
at No. 25