How Many NFL Teams Have Gone Undefeated in a Single Season?
Only one National Football League team has gone undefeated in both the regular season and subsequent playoff games. The 1972 Miami Dolphins won 14 regular season games and three postseason playoff games, including Super Bowl VII against the Washington Redskins, for a perfect record.
Three professional football teams have undefeated regular seasons: The 1934 and 1942 Chicago Bears and the 2007 New England Patriots. The 1934 Chicago Bears lost to the New York Giants in that year's championship game, finishing the season with 13 wins. The 1942 Chicago Bears team lost their championship to the Washington Redskins after winning 11 regular season games. The 2007 Patriots lost to the New York Giants in Super Bowl XLII. They finished with 16 regular season wins and two playoff wins.