Short answers, pulled from the story.
The Chicago Tigers played their first game during the 1920 season of the American Professional Football Association. They competed against other APFA teams throughout that year without becoming a formal member of the league.
Guil Falcon emerged as the primary figure leading the Chicago Tigers through their single season. The franchise operated as a successor to the Hammond Bobcats, with Alva Young applying to bring an actual Hammond franchise into the new league.
The Chicago Tigers played their home games at Chicago's Wrigley Field during their single season. It was known as Cubs Park at that time and became the first NFL stadium to host a professional football game.
The Chicago Tigers finished with a record of two wins, five losses, and one tie. They dropped out of the league between the 1920 and 1921 seasons despite playing seven games against other APFA teams.
Legend has it that the Cardinals' owner Chris O'Brien offered to play for the right to represent the city of Chicago in the APFA. However, there is no contemporary evidence for this challenge and the story contains three major problems regarding its accuracy.