Sonny Lubick Field at Colorado State Stadium is an outdoor college football stadium in the western United States, on the campus of Colorado State University in Fort Collins, Colorado. The new venue is the home field of the CSU Rams of the Mountain West Conference; it opened August 5, 2017, and hosted its first game on August 26. It replaced Sonny Lubick Field at Hughes Stadium, which had been the Rams' home since 1968.