Brandon Taylor drew a charge with 9.7 seconds left and Glen Dean hit a pair of free throws on the other end to help Utah survive a late rally and upset Colorado 58-55 on Saturday afternoon.
Jason Washburn scored 13 points and collected 11 rebounds, while Jeremy Olsen added 12 points off the bench, to lead the Utes (10-11, 2-7) to their second Pac-12 win of the season.
Spencer Dinwiddie had 18 points, while Andre Roberson chipped in 10 points and 12 rebounds, for the Buffaloes (14-7, 4-5) who added a damaging loss to their NCAA tournament resume.
After trailing by as many as 22 points, Colorado made a late second-half run to get back into the game. The Buffaloes held Utah without a field goal over the final 10:44 of the game to whittle the Utes' lead down.