Oregon guard Tyler Dorsey, right, drives to the basket as Colorado guard Derrick White defends in the first half Saturday in Boulder.
Oregon guard Tyler Dorsey, right, drives to the basket as Colorado guard Derrick White defends in the first half Saturday in Boulder.David Zalubowski/Associated Press

Xavier Johnson added 13 points as the Buffaloes (12-10, 2-7 Pac-12) kept the Ducks winless in seven trips all-time in Boulder.

Payton Pritchard’s 19 points led the Ducks (19-3, 8-1), who lost for the first time since Nov. 21 against Georgetown.

White had a pair of 3-pointers early in the second half that put the Buffaloes ahead 45-39 while Colorado’s stifling defense was keeping the Ducks out of rhythm at the other end of the court. And he had a 3-pointer, a three-point play and two free throws in an 11-1 run that gave Colorado a 64-52 lead.

The Buffs are just the third team to top 70 points against the Oregon this season.