Colorado Field was an outdoor college football stadium in the western United States, on the campus of Colorado State University in Fort Collins, Colorado. Opened in 1912, it was the home of the CSU Rams of the Western Athletic Conference (WAC) through 1967. The Colorado Aggies won nine conference championships here between 1915 and 1955, with players such as Ralph "Sag" Robinson, Kenny Hyde, Julius Wagner, Thurman "Fum" McGraw, Jack Christiansen, Gary Glick, and Oscar Reed.