Chapter 2: The basics of NFL games, strategies and wagering
What is now the NFL was established in 1920 as the American Professional Association with ten teams from four states. Jim Thorpe, one of the most famous athletes of all time, was president. It became the NFL in 1922. The Chicago Bears and the Arizona Cardinals can trace their roots back to two of the original ten teams. The Green Bay Packers is the oldest NFL team which has had the same name and location since joining the NFL in 1921.