Coached by Don Shula, the Miami Dolphins went undefeated during the 1972 football season, ending with a 14-0-0 record. This is the only time in NFL history that a team has gone an entire season without losing a single game.
The Miami Dolphins defeated the Washington Redskins in the Super Bowl with a score of 14-7 to secure their perfect championship season. Since then, no other team has managed to replicate their success, though the New England Patriots came close in 2007. That team went 18-1, losing only the Super Bowl to the New York Giants led by quarterback Eli Manning.