BOULDER, Colorado (Ticker) -- Even without leading scorer Michel Morandais, Colorado had little trouble notching its 13th straight home victory, 68-56, over No. 18 Oklahoma State in Big 12 Conference play.
Morandais sat out with a sprained left ankle, so David Harrison and Stephane Pelle picked up the scoring slack with 14 points apiece. Blair Wilson added 13 for the Buffaloes (18-10, 8-7 Big 12), who have beaten four ranked teams during their home streak.
"We worked with what we had," Colorado coach Ricardo Patton said. "It would have been nice to have had that sweet jumper, but we have a lot of scorers."
Harrison, a 7-foot sophomore had 16 rebounds and two blocked shots. Pelle added 11 boards.
"Those two guys are tough," Oklahoma State coach Eddie Sutton said. "I wish they had just one of them."
Harrison had his eighth double-double of the season. Pelle's double-double was his 11th of the season.
"The coaches told us that if we played a halfcourt game that we could win the game," Harrison said. "We used our size down low. They couldn't handle both Stephane and I down there together."
Colorado has won six of its last nine overall, while Oklahoma State (20-8, 9-6) has lost seven of 10 since a 15-game winning streak. The Buffaloes bolstered their hopes of an NCAA Tournament at-large berth.
"In my mind, I don't see any reason why we wouldn't (go)," Patton said. "I don't think there is a question. I think every win makes a case that we are good enough to be in a field of 65. If we take care of our part and don't get wrapped up in anything else, we'll be alright."
Oklahoma State trailed by five points at halftime, but got within 31-30 by scoring the first four points after the break. Colorado, however, put away the game with a 10-0 run that included eight points by Wilson. The Cowboys never got closer than nine the rest of the way.
Wilson hit two of his three 3-pointers during the spurt, and was able to lift the Buffaloes despite shooting just 4-of-13 from the field. He helped Colorado on defense with three steals.
Ivan McFarlin and Victor Williams scored 13 points apiece for Oklahoma State, which lost to Colorado for just the fifth time in 19 games under Sutton.
"We had no inside game tonight," Sutton said. "I thought Ivan played well, but when your three best perimeter players go 10-for-23, you can't win like that."
Those players - Williams, Tony Allen and Melvin Sanders - were part of an Oklahoma State attack that shot just 32 percent (19-of-59) from the field. Colorado was not much better, shooting 37.5 percent (24-of-64).
Oklahoma State made only two baskets in the final seven minutes and failed to cut into its double-digit deficit.
Senior reserve Mookie Wright led Colorado with eight assists to go along with his nine points on 4-of-8 shooting. Chris Copeland added eight points off the bench on a 4-of-6 performance from the field.
"They really picked it up," Pelle said. "They played really well. They really contributed on the defensive side of the ball."
Oklahoma State remained tied for fourth in the Big 12 with Missouri, which lost at Iowa State earlier Wednesday. Both teams are 9-6 in the conference, but the Cowboys have a tiebreaker by virtue of their January 18 win over the Tigers. The top four teams in the conference receive first-round byes in the Big 12 tournament.