The National Football League (NFL) was established in 1920 as the American Professional Football Association (APFA) before being renamed as the NFL in 1922. It is the highest professional level of American Football in the world, consisting of 32 teams divided equally into two conferences, the American Football Conference (AFC) and National Football Conference (NFC). The winner of each conference plays each other in the Super Bowl, one of the most watched sporting events of the year.
Historically, the Green Bay Packers are the most successful franchise in the sport, having won 13 titles, nine NFL Championships before the Super Bowl era, and four Super Bowls afterwards. Since the Super Bowl was first held in 1967, the New England Patriots and Pittsburgh Steelers have won six each, the most of any franchise.
Tom Brady has won seven titles, giving him more Super Bowls than every NFL franchise, winning six with the Patriots and one with the Tampa Bay Buccaneers.
As well as being the most popular sports league in the US, the NFL is also the wealthiest sports league in the world by revenue and has the most valuable teams.