The team known as the Cardinals, which has been in existence since 1920, and has been located in Chicago, St. Louis, and Arizona; has the most losses all time with 691. The Detroit Lions are second all time with 593 losses.
Arizona Cardinals- 680 losses
Over the 76-77 season, the Tampa Bay Buccaneers lost 26 consectutive loses
Cinncinnati bengals
Oakland Raiders
well it would be the Oakland raiders they are the worst team in history
The Green Bay Packers.
University of miami
2009 Oakland raiders
the Dallas Cowboys have been in the most superbowls in nfl history. However the Pittsburgh steelers have won the most superbowls in nfl history as of 2008.
The Chicago Bears have the most victories in NFL history. They are 744-568-42.
bears
The Green Bay Packers, everyone's favorite underdog team.