As ESPN first reported, Colorado guard Spencer Dinwiddie has torn his left ACL, and so surgery will be required in the coming days. The procedure will end Dinwiddie's junior season.
He averaged 14.7 points, 3.8 assists and 3.1 rebounds this year for the 14-3 Buffaloes, who are 3-1 in the Pac-12 and face UCLA on Thursday.