Warren Ballpark is a baseball stadium located in Bisbee, Arizona. The ballpark was recently home to the Bisbee-Douglas Copper Kings of the independent Arizona-Mexico League. The Stadium was built in 1909 by the Calumet and Arizona Mining Company (which later merged with Phelps Dodge) as a recreation for the miners and their families, pre-dating the construction of Chicago's Wrigley Field by nearly five years.