Five Reasons the 1972 Miami Dolphins Will Forever Be the Only Undefeated NFL Team
NFL on Twitter: Only one team in NFL history has ever completed a perfect season: The 1972 @MiamiDolphins. 50 years later, @cfrelund breaks down the numbers to show us just how difficult
1972 Miami Dolphins – The Perfect Season 50th Anniversary
20 NFL teams that started 9-0 since 1972 Miami Dolphins
20 NFL teams that started 9-0 since 1972 Miami Dolphins
1972 Miami Dolphins: The inside story of the only perfect season in NFL history
NFL - There's only one team to ever do it. #72Dolphins 50