Jack Trice Stadium is a stadium, in Ames, Iowa, United States. It is primarily used for college football, and is the home field of the Iowa State Cyclones. It opened on September 20, 1975, with a 17–12 win over Air Force. It is the third-largest stadium by capacity in the Big 12 Conference and the third-newest in the conference, behind only Milan Puskar Stadium of West Virginia and Baylor's McLane Stadium.