Not since the New England Patriots in 2007 has an NFL team achieved a perfect regular season and we look at the odds of a team repeating that feat in the 2025/26 campaign.
(Odds were correct at the time of writing and are subject to fluctuation).
With the exception of ties, only four teams have achieved a perfect regular season.
The Chicago Bears went 13-0 in the 1934 season and recorded another undefeated campaign by going 11-0 in 1942, though on both occasions they were defeated in the NFL Championship Game.
In 1972, the Miami Dolphins were the first and only team in NFL history to have played a perfect season, winning all 14 of their regular season matches and emerging victorious in all three of their postseason games.
With the demands of the league increasing, the Patriots won all 16 of their regular season matches in 2007 but their quest for a fourth championship was ended by Eli Manning and the New York Giants.
Several teams have gone close, with the 2011 Green Bay Packers and 2015 Carolina Panthers both posting 15-1 records. Since the introduction of a 17-game regular season in 2021, a return of 14 wins from the Kansas City Chiefs and Philadelphia Eagles in 2022 was the best return of all the teams.