(Corvallis, OR)  --  Freshman quarterback Nick Mitchell was intercepted on Oregon State's final drive of the game as the Beavers lost to the Buffaloes 17-13 at Reser Stadium.  Mitchell went 9-of-24 for 122 yards in the first collegiate start. T he loss dropped the Beavers to 0-and-4 in Pac-12 play.  Colorado snapped a 14-game conference losing streak with the win.