Sophomore Richard Roby — who was held to just 12 points, five below his season average — hit a long 3-pointer with 1:46 remaining to give the Buffs a two-point lead. Seniors Jayson Obazuaye and Glean Eddy, and junior Marcus Hall sank two foul shots a piece after that to help preserve the victory.
The Buffs are now 20-8 overall on the season. They move to Friday's second-round game vs. Texas A&M (1 p.m. MT, ESPNPlus, ESPNU).
The Aggies narrowly beat Colorado in College Station, 61-58, in a game where Roby missed potential-go-ahead free throws late in the game. Texas A&M finished in fourth place in the Big 12, one spot above Colorado, with a 20-7 overall record and a 10-6 mark in conference.
Friday's game could determine both team's fate in terms of the NCAA Tournament.
When asked about the importance of Friday's matchup, CU coach Ricardo Patton said, "I would be shocked we weren't already getting serious consideration for the NCAA tournament. This is a very tough conference. I think this team has done a nice job so far. That's out of our control at this point. So we're just going to focus in on -- just do the best that we can do and focus on A&M. I think that this team has shown that it is worth thief an NCAA bid. That's just my personal opinion."