The Miami Dolphins became the first, and only, NFL team to finish a championship season undefeated and untied when they beat the Washington Redskins 14-7...

1973 was the continuation of the Miami Dolphins two-year domination of the NFL. They would repeat as champions in Super Bowl VIII. Despite losing two games,...

In 1974, one sudden death overtime period (15 minutes) was added to all preseason and regular season games; if no team scored in this period, the game...

1975 was the first time that featured an entire season with no games ending in a tie. It was also the first year that clubs with the best regular season...

In 1976 the league expanded to 28 teams with the addition of the Seattle Seahawks and the Tampa Bay Buccaneers. This fulfilled one of the conditions agreed...

In 1977, the Seattle Seahawks were placed in the AFC West while the Tampa Bay Buccaneers were slotted in the NFC Central. This was the last NFL regular...

The league expanded the regular season from a 14-game schedule to 16. Furthermore, the playoff format was expanded from 8 teams to 10 teams by adding another...

In 1979, the Pittsburgh Steelers repeated as champions by defeating Los Angeles Rams, becoming the first team to win back-to-back Super Bowls twice. Division...

In 1980, the division winners in the AFC were Buffalo in the East, Cleveland in the Central, and San Diego in the West. The two wild-Card teams were Houston...

In 1981, the division winners in the AFC were Miami in the East, Cincinnati in the Central, and San Diego in the West, with the Wild-Cards going to New...