Hunt was 7-of-10 shooting and made 3 of 4 from 3-point range. Warith Alatishe added 10 points, 10 rebounds, four assists and a career-best four steals for Oregon State (14-11, 10-9 Pac-12).
There were 19 lead changes and seven ties, and neither team led by more than six points, before Roman Silva and Ethan Thompson made back-to-back layup and Hunt hit his final 3 in a 58-second span to give OSU a the lead for good at 67-60 with 5:34 to play. Utah (10-12, 7-11) twice trimmed its deficit to two points but Lucas made 3 of 4 free throws in the 23 seconds to seal it.
Timmy Allen had 23 points, five rebounds and six assist for Utah. Alphonso Plummer added 15 points on 6-of-10 shooting.
Oregon State, which shot 53% overall, limited the Utes to just 20 rebounds and outscored them 24-4 in second-chance points.
The Beavers, who have won three in a row, have won three consecutive road conference games for the first time since the 2002-2003 season. They have won three straight against Utah, including a 71-69 win in last year's Pac-12 tournament in Las Vegas, when Lucas hit a 3-pointer with 1.8 seconds remaining.
Utah has lost five of its last six games.
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