Colorado State coach Steve Fairchild thinks the rivalry with Colorado should be played at Invesco Field "for the rest of all time" but today may be the last time the teams face each other at the venue.
Buffs athletic director Mike Bohn announced Friday that Colorado would exercise its option and move the 2009 game to Folsom Field in Boulder to give the Buffaloes a sixth home game.
Colorado State responded by moving the 2010 game to Fort Collins.
Fairchild called Invesco Fied a "fantastic setting" and says it would be a shame if they ruined their chances of playing there again.
The Buffaloes have won five of the past six games, with all six decided by less than a touchdown. Colorado won 31-28 in overtime last year.