Boulder, Colo. ? Richard Roby scored 22 points, Marcus Hall added 17, and Colorado withstood a big second-half run by No. 23 Texas to beat the short-handed Longhorns, 88-79, Tuesday night.

Andy Osborn had 14 points and some key rebounds in the second half for Colorado (12-9, 4-6 Big 12 Conference), which had five players in double figures and beat the Longhorns for just the second time in nine games. The Buffaloes also hounded freshman Daniel Gibson, Texas’ leading scorer the previous six games, into 4-of-12 shooting and eight turnovers.

Brad Buckman had 27 points and 21 rebounds, and Jason Klotz added 16 points for Texas (15-7, 4-5), which has lost four of five and likely will drop out of the polls after being ranked as high as No. 10 just a month ago.

Down to seven scholarship players — including three freshmen — because of injuries and grades, the Longhorns were miserable in the first half and didn’t get much better to start the second, falling behind 58-36 with 14 minutes left.

Texas tightened up at both ends to get back in it.

Working the ball inside to Buckman and Klotz, the Longhorns freed up their shooters on the perimeter, hitting four three-pointers during a 21-3 run that cut Colorado’s lead to 61-57 with 71/2 minutes left.

Texas was just as good at the other end, forcing Colorado into tough shots and bad passes. The Buffaloes missed 11 of 12 shots during Texas’ run.

But Colorado built its lead back up as quickly as it lost it. Hall hit a three-pointer, Osborn dropped in a baseline jumper, and Hall added two free throws to put the Buffaloes up, 70-59, with 4:45 left. Texas trimmed the lead to 83-77 on Kenny Taylor’s consecutive three-pointers in the final minute, but Colorado went 5-of-6 from the free throw line to seal it.

The Longhorns were lucky to have even had a chance with the way they started the game.

Forcing passes in traffic and misfiring from all angles — at least three shots hit the side of the backboard in the first half alone — Texas missed 13 of 16 shots midway through the first half to fall behind by 15. The Longhorns shot just 30 percent in the half and spent a good portion of halftime bickering and yelling at each other.

Iowa State 65, Nebraska 60

Lincoln, Neb. — So much for Iowa State’s road troubles.

The Cyclones followed up their upset at nationally ranked Texas with a win over Nebraska. Before Saturday’s overtime win against the Longhorns, Iowa State had lost 28 straight conference road games.

“I told you once we got good enough to start winning away, we’d start winning more,” Iowa State coach Wayne Morgan said. “It’s going to be a pleasant, slow bus ride home.”

Iowa State (12-8, 4-5) won its fourth straight game overall. Nebraska (10-10, 3-6) has lost six of its last seven Big 12 games.

Curtis Stinson, who led the Cyclones with 25 points, in the last eight minutes made seven of eight free throws and scored 11 points.

“Last year I came in here and watched Jake (Sullivan) hit from the free-throw line and step up,” Stinson said. “I wanted to do that tonight.”