BOULDER, Colo. (AP) - Ninth-ranked Colorado won the Pac-12 South title with a 27-22 win over No. 21 Utah thanks to a senior-laden defense that forced two huge fumbles by Utes star running back Joe Williams. Cornerback Chidobe Awuzie also had a touchdown-saving tackle after a 93-yard kickoff return.

The Buffaloes (11-2, 8-1, No. 9 CFP) will face sixth-ranked Washington in the conference championship next weekend.

The Utes (8-4, 5-4) pulled to 27-22 on Demari Simpkins' 7-yard TD catch with 1:34 remaining that capped an 80-yard drive that included two fourth-down conversions and was done largely without Williams, who hobbled off for the second time with an apparent shoulder injury.

The 2-point conversion toss by Troy Williams was incomplete, and the Utes' onside kick failed when Kabion Ento recovered for Colorado, which ran out the clock to complete its worst-to-first revival in one of college football's biggest comeback stories in recent years.