Much like his mate in the special teams room, Alejandro Mata, Colorado punt Mark Vassett didn’t get off to the start he wanted this season. Also like Mata, Vassett overcame that slow start and has been in a groove lately for the 21st-ranked Buffaloes (6-2, 4-1 Big 12), who visit Texas Tech on Saturday in Lubbock, Texas (2 p.m.