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History of the NFL championship

History of American football championships

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📖 Key Information

Throughout its history, the National Football League (NFL) and other rival American football leagues have used several different formats to determine their league champions, including a period of inter-league matchups to determine a true national champion. Following its founding in Philadelphia, Ohio (1920), the NFL first determined champions through end-of-season standings, switching to a playoff system in 1933 (a one-game playoff was required in 1932). The rival All-America Football Conference (AAFC) and American Football League (AFL) have since merged with the NFL (the only two AAFC teams that currently exist, the Cleveland Browns and the San Francisco 49ers, joined the NFL in 1950), but AAFC Championship Games and records were not included in the NFL's record books until 2025.