The Buffs had missed a combined 31 free throws in their previous two outings, including 16 against CSU. Roberson was 1-for-7 at the line against the Rams, adding to his frustration with that loss.
But Roberson and the Buffs turned things around at the line tonight, making 27 of 32 free throws as a team. Roberson was perfect at the line, going 9-for-9.
After sitting on the loss to their in-state rivals for a week, the Buffs were inspired to play, perhaps, their best half of basketball so far this season in the first half against the Bulldogs.
Colorado stormed to a 20-point lead just before halftime and held Fresno State to just 23 points and 27 percent shooting in the first half. CU also controlled the rebounds by a double-digit advantage at halftime.
Fresno State showed a lot of fight in the second half by battling back to within three points.
Fresno State guard Kevin Olekaibe led the way for the Bulldogs by scoring 26 points and making five 3-pointers in 38 minutes of action. He missed a tying 3-point attempt late.
Reserve Tyler Johnson came off the bench to score 11 points for the Bulldogs. He was the only other Fresno State player to score in double figures.
Colorado overcame 17 turnovers and freshman Spencer Dinwiddie scored 15 points to help Roberson. Senior forward Austin Dufault added 13 points.
CU starting point guard Nate Tomlinson contributed in a variety of ways with seven points, six rebounds and six assists.
The Buffs improved to 5-3 overall. They play host to Wyoming on Friday night at 7 p.m. before taking a 10-day break from games for finals.