Colorado 65, Stanford 63: Andre Roberson scored a career-high 24 points, including eight straight during an 18-2 run in the second half, as the visiting Buffaloes enhanced their NCAA Tournament chances with a comeback victory.Roberson, the nation's leading rebounder at 11.7 per game, had eight boards, but was the biggest factor offensively as Colorado (19-8, 9-6 Pac-12) erased a 10-point deficit in the second half. Spencer Dinwiddie scored 19 points for the Buffaloes, who have re-entered the NCAA picture by winning five of their last six games.Andy Brown had 17 points and eight rebounds while Chasson Randle scored 16 for the Cardinal (16-13, 7-9), who have lost four of their last five games. Stanford inbounded the ball from just over midcourt with 2.2 seconds left and Josh Powell tried to drive for a dunk, but replays quickly revealed it came well after the buzzer.The Cardinal led by as many as 10 early in the first half as Colorado missed 11 of its first 14 shots from the field, but settled for a 32-21 lead at the break. Brown, Randle and John Gage each scored five of the Cardinal's final 15 points before intermission, while Roberson had eight points and five rebounds.The Cardinal went ahead 43-33 on Randle's 3-pointer with 14:45 remaining before the Buffaloes embarked on their big run. Stanford quickly cut the deficit to one on Brown's tip-in with 6:50 to go, but Colorado never lost the lead down the stretch in handing the Cardinal their third straight home loss.GAME NOTEBOOK: Dinwiddie received a technical foul with 26 seconds left after swatting the ball away from Powell, who was trying to inbound the ball, after his basket gave the Buffaloes a 63-59 lead. Stanford, though, didn't take full advantage as Aaron Bright made only one of the technical free throws and Powell missed a jumper with 18 seconds left. ... Colorado freshman F Josh Scott missed his second straight game after suffering a concussion against Arizona State on Feb. 16. .... The Buffaloes are 4-4 on the road in the Pac-12, the first time they've won four conference games away from home since 1996-97.