The NFL is entering its 104th season and will be holding the 58th Super Bowl in Las Vegas in February. Twenty NFL franchises have won at least one Super Bowl, but only one of those teams was perfect.
Even taking into account the NFL’s pre-Super Bowl era history, dating back to 1920, no team has ever completed a perfect season, winning every single game on their schedule — except one.
The 1972 Miami Dolphins made history and changed the game.
The Dolphins, entering 1972, were only a seven-year-old franchise, starting in the American Football League, and coming into the NFL as part of the NFL-AFL merger in 1970.