The All-America Football Conference (AAFC) was a major professional American football league that challenged the established National Football League (NFL) from 1946 to 1949. One of the NFL's most formidable challengers, the AAFC attracted many of the nation's best players, and introduced many lasting innovations to the game. However, the AAFC was ultimately unable to sustain itself in competition with the NFL. After it folded, three of its teams were admitted to the NFL: the San Francisco 49ers, the Cleveland Browns and the original Baltimore Colts.
The 1990 NFL season was the 71st regular season of the National Football League (NFL). To increase revenue, the league, for the first time since 1966, reinstated bye weeks, so that all NFL teams would play their 16-game schedule over a 17-week period. Furthermore, the playoff format was expanded from 10 teams to 12 teams by adding another wild card from each conference, thus adding two more contests to the postseason schedule; this format was modified with realignment in 2002 before the playoffs expanded to 14 teams in 2020.
The 1964 NFL season was the 45th regular season of the National Football League. Before the season started, NFL commissioner Pete Rozelle reinstated Green Bay Packers running back Paul Hornung and Detroit Lions defensive tackle Alex Karras, who had been suspended for the 1963 season due to gambling.
The 1963 NFL season was the 44th regular season of the National Football League.
The 1936 NFL season was the 17th regular season of the National Football League. For the first time since the league was founded, there were no team transactions, and all league teams played the same number of games.
The 1937 NFL season was the 18th regular season of the National Football League. The Cleveland Rams joined the league as an expansion team. Meanwhile, the Redskins relocated from Boston to Washington, D.C.
The 1938 NFL season was the 19th regular season of the National Football League. The season ended when the New York Giants defeated the Green Bay Packers in the NFL Championship Game.
The 1939 NFL season was the 20th regular season of the National Football League. Before the season, NFL president Joseph Carr died, and Carl Storck was named to replace him.
The 1940 NFL season was the 21st regular season of the National Football League. The season ended when the Chicago Bears defeated the Washington Redskins in the NFL Championship Game by 73–0; this result still stands as the most one-sided victory in NFL history as of the 2023 season.
The 1941 NFL season was the 22nd regular season of the National Football League. Before the season, Elmer Layden was named the first Commissioner of the NFL, while Carl Storck resigned as league president. Layden also took on the duties of president and signed a five-year contract at $20,000 annually.
The 1943 NFL season marked the 24th year of the National Football League. A total of 38 regular season games were scheduled, starting on Sunday, September 19 and culminating on Sunday, December 12.
The 1944 NFL season was the 25th regular season of the National Football League. The Boston Yanks joined the league as an expansion team. Also, the Triangles-Dodgers franchise changed their name to the Brooklyn Tigers for this one season before merging with the aforementioned Yanks the following year. Meanwhile, both the Cleveland Rams and the Philadelphia Eagles resumed their traditional operations, while the Pittsburgh Steelers merged with the Chicago Cardinals for this one season due to player shortages as a result of World War II. The combined team, known as Card-Pitt, played three home games in Pittsburgh and two in Chicago, and set the 20th century record for lowest punting average by an NFL team with 32.7 yards per punt.
The 1945 NFL season was the 26th regular season of the National Football League. The Pittsburgh Steelers and the Chicago Cardinals resumed their traditional operations.
The 1950 NFL season was the 31st regular season of the National Football League. The merger with the All-America Football Conference (AAFC) expanded the league to 13 teams. Meanwhile, television brought a new era to the game. The Los Angeles Rams became the first NFL team to have all of its games – both home and away – televised. The Washington Redskins became the second team to put their games on TV. Other teams arranged to have selected games televised.
The 1952 NFL season was the 33rd regular season of the National Football League. Prior to the season, New York Yanks owner Ted Collins sold his team back to the NFL. A few days later, an ownership group in Dallas, Texas, purchased the Yanks from the NFL, relocated them to Dallas, Texas, and renamed them the Dallas Texans.
The 1941 New York Giants season was the franchise's 17th season in the National Football League.
The 1941 season was the Philadelphia Eagles' ninth in the National Football League (NFL). The team improved on their 1–10 record from the previous season, but just barely, winning two games, and they missed out on the playoffs again.
The 1940 Philadelphia Eagles season was their eighth in the National Football League. The team failed to improve on their previous output of 1–9–1, losing ten games. The team failed to qualify for the playoffs for the eighth consecutive season.
