1950s[]
- 1959 - Lamar Hunt becomes the Genral Manager and Head Coach of the Chicago Cardinals, but with his wealth based on Texas oil moves the team to Dallas.
1960s[]
- 1960 - The NFL adds Texas based football team the Houston Cowboys who were originally planned to play in Dallas, but was taken by Lamar Hunt's new Dallas Cardinals, and a rivalry is already built before any games are played between the two teams
- 1962 - The NFL adds a new Minneapolis based team named the Minnesota Miners
- 1967 - The NFL adds the New Jersey Giants, Miami Dolphins, San Jose Raiders, and the St. Louis based Missouri Saints
1970s[]
- 1970 - The Los Angeles Rams move to Denver becoming the Denver Rams
- 1971 - The NFL adds the Boston Patriots, Atlanta Rebels, and Seattle based Pacifica Seahawks
- 1975 - The NFL adds the New Orleans based Louisiana Oilers and Los Angeles Chargers after the Rams move to Denver
1980s[]
- 1980 - The NFL adds the Buffalo Bullets and Orlando Predators
- 1984 - The NFL adds the Indianapolis Nighthawks, Kansas City Chiefs, and the revised Akron Pros as the Cincinnati Pros
1990s[]
2000s[]
2010s[]
- February 3, 2013 - The Pacifica Seahawks defeat the Cincinnati Pros to win the 93rd NFL Championship game
- February 3, 2014 - The Buffalo Bullets defeat the Miami Dolphins to win the 94th NFL Championship game