1920    The National Football League, (NFL), is founded in the United States.

1920    The National Football League is organized in Canton, Ohio, United States.

1922    The American Professional Football Association formally changes its name to the National Football League.

1966    U.S. President Lyndon B. Johnson signs into law an antitrust exemption allowing the National Football League to merge with the upstart American Football League.

1973    Fred Dryer of the then Los Angeles Rams becomes the first player in NFL history to score two safeties in the same game.

1982    The National Football League players begin a 57-day strike.

1994    The National Football League announces that the Jacksonville Jaguars will become the league's 30th franchise.