What Is The Only NFL Team To Go Undefeated For The Season Finishing 17 0?

What Is The Only NFL Team To Go Undefeated For The Season Finishing 17 0? Since the National Football League began in 1920, only one team has played a perfect season (both regular season and playoffs): the 1972 Miami Dolphins, who won all fourteen of their regular season games and three postseason games, including Super