As of the end of the 2007 season, there have been four teams in the NFL that have had undefeated/untied regular seasons: 1934 - Chicago Bears
1942 - Chicago Bears
1972 - Miami Dolphins
2007 - New England Patriots Of those four teams, only the 1972 Dolphins won the NFL championship and completed the season undefeated.
There has been a team with a perfect season. The Miami Dolphins had a perfect season with the post season too. If you don't count the post season then the Patriots had too.
Green bay
He didn't play on any NFL Football Teams, but he played for Yale University.
No
Brett farve
There has been a team with a perfect season. The Miami Dolphins had a perfect season with the post season too. If you don't count the post season then the Patriots had too.
Detroit lions.
Chicago bears
The Chicago Bears have the most regular season wins (686) and the most total wins (702) of any NFL team.
No.
No, each team is free to trade with any of the other 31 teams in the NFL.
Miami Dolphins and New England Patriots are the only Nfl teams to go undefeated in the regular season, but the Dolphins are the only team to go undefeated and also win the Superbowl.
No at least not at this time!
Green bay
He didn't play on any NFL Football Teams, but he played for Yale University.
Probably not this year
Yes, the Cleveland Browns.