The Wildcats raced out to a big lead and held on down the stretch to remain unbeaten with a 69-57 win over Colorado on Thursday night.
Arizona (19-0, 6-0 Pac-12) had a week off after blowing out rival Arizona State and was still in a groove early, building a 14-point lead in the opening six minutes.
Arizona struggled from the perimeter, making 3 of 15 from 3-point range, had a rare night when it didn't outrebound the opposition (32-32) and missed three free throws in the closing 72 seconds to keep the game from becoming a rout.
Nick Johnson led Arizona with 18 points and Aaron Gordon added 12.