The franchise dates to 1898, when a neighborhood group gathered to play on the South Side of Chicago, calling themselves the Morgan Athletic Club. Chicago painting and building contractor Chris O'Brien acquired the team, which he moved to Normal Field on Racine Avenue. The team was known as the Racine Normals until 1901, when O'Brien bought used jerseys from the University of Chicago. After he described the faded maroon clothing as "Cardinal red", the team became the Racine Street Cardinals. Eventually in 1920, the team became a charter member of the American Professional Football Association (APFA), which was rechristened the National Football League (NFL) two years later. The team entered the league as the Racine Cardinals, but changed their name to the Chicago Cardinals in 1922 to avoid confusion with the Horlick-Racine Legion, who entered the league the same year.
The franchise dates to 1898, when a neighborhood group gathered to play on the South Side of Chicago, calling themselves the Morgan Athletic Club. Chicago painting and building contractor Chris O'Brien acquired the team, which he moved to Normal Field on Racine Avenue. The team was known as the Racine Normals until 1901 when O'Brien bought used jerseys from the University of Chicago. After he described the faded maroon clothing as "Cardinal red", the team became the Racine Street Cardinals. Eventually in 1920, the team became a charter member of the American Professional Football Association (APFA), which was rechristened the National Football League (NFL) two years later. The team entered the league as the Racine Cardinals, but changed their name to the Chicago Cardinals in 1922 to avoid confusion with the Horlick-Racine Legion, who entered the league the same year.