Oklahoma State heads to Colorado on a four-game skid

Oklahoma State and Colorado entered the conference schedule with momentum then struggled once Big 12 play began.

Both are seeking a boost when the Cowboys visit the Buffaloes on Saturday afternoon in Boulder, Colo.

Oklahoma State (16-10, 4-9) has lost four in a row, the last against No. 8 Kansas on Wednesday night, and its 12-1 start to this season has quickly faded in the loaded Big 12.

Things just got tougher for the Cowboys, who announced Thursday that big man Lefteris Mantzoukas has left the program for health reasons.