The Cardinals are the oldest existing football club in the United States, beginning as an amateur athletic club team in Chicago named the Morgan Athletic Club. They began to field a pro team even before the founding of the NFL. Located on Racine Avenue in Chicago, they became known for a while as the "Racine Cardinals". They were often confused with Racine, Wisconsin, by fans in other cities. As the "Chicago Racine Cardinals" and then as the "Chicago Cardinals", they entered the NFL and fought with the crosstown rival Chicago Bears for years before moving to St. Louis.