Photo by: Matt McClain
In this photo taken Nov. 13, 2010, Colorado's Patrick Mahnke, top center, and Nick Kasa, bottom, sack Iowa State's Austen Arnaud (4) as the ball is forced out and returned for a Colorado touchdown in the fourth quarter of a NCAA college football game in Boulder, Colo Arnaud suffered a season ending knee injury on the play. (AP Photo/ Matt McClain)
