(AP) -- Junior forward Matt Mitchell had 22 points and 12 rebounds for his first career double-double and scored his 1,000th point for No. 4 San Diego State, which beat New Mexico 82-59 to win the Mountain West Conference championship.

The Aztecs remain the nation's only undefeated team, improving their record to 25-0.

Yanni Wetzell added 20 points and nine rebounds for the Aztecs.

SDSU clinched at least a share of the title in the first half when Utah State beat Colorado State, then won it outright with a suffocating defense that held New Mexico to 26 points in the second half.

New Mexico dropped to 17-9.