Never, The Patriots in '06 went undefeated all the way and lost the Superbowl, They have never before been undefeated in regular season.
Yes. The New England Patriots beat the New York Giants 38-35 on December 29, 2007 to culminate an undefeated regular season in 2007. This is a remarkable feat. Previously, the 1972 Miami Dolphins had been the only team since the AFL-NFL merger to have an undefeated regular season. The 1972 Dolphins a 17-game regular season while the Patriots played a 16-game regular season.
its only been one season the pats did it in 07 but lost in the super bowl
As of the 2008 season, that has occurred twice. In Super Bowl VII, the Miami Dolphins were undefeated and played the Washington Redskins. The Dolphins won, 14-7, to complete their undefeated season (17-0). In Super Bowl XLII, the New England Patriots were undefeated and played the New York Giants. The Patriots lost, 17-14, and finished the season at 18-1.
only before the season started.
The Dallas Cowboys have never had an undefeated season.
The Titans have never had an undefeated season. Their best seasons have been 13-3 on three occasions.
Regular season schedules are not released or created until after the Super bowl has been played.
There have been two teams in NFL history to have an undefeated regular season. The 2007 New England Patriots are the only team that has accomplished an undefeated regular season winning 16 games. The 1972 Miami Dolphins were the other team to have an undefeated season but the schedule in 1972 had only 14 games. That Miami team went on to win the Super Bowl that year, finishing 17-0. The 2007 Patriots lost in the Super Bowl to the New York Giants. The final record for the Patriots was 18-1.
There has never been a Major League baseball team to go undefeated in a season.