As of the 2007 season, since the NFL went to a 16 game regular season in 1978 there have been seven teams to finish the season 1-15:
1) 1980 New Orleans Saints
2) 1989 Dallas Cowboys
3) 1990 New England Patriots
4) 1991 Indianapolis Colts
5) 1996 New York Jets
6) 2000 San Diego Chargers
7) 2001 Carolina Panthers
No team has ever gone 0-16. The 2008 Detroit Lions became the first team to go 0-16 in the regular season. The only bright spot was the were undefeated in the preseason.
According to the Pro Football Hall of Fame, as of the start of the 2007 season, the Cardinals franchise has the most all time losses (regular season and playoffs) with 664 (458-664-39). The Lions franchise is second with 554 (488-554-32). As of the start of the 2007 season, that distinction goes to the Arizona Cardinals whose franchise record is 458-664-39 for a winning percentage of .411. The Cardinals began play in the NFL in 1920 as the Chicago Cardinals. The team with the second most losses is the Detroit Lions who have a franchise record of 488-554-32 for a winning percentage of .469. The Lions began play in the NFL in 1930 as the Portsmouth Spartans.
As of the start of the 2008 season, the St. Louis Rams and the Minnesota Vikings have the most franchise playoff losses with 24. The Vikings playoff record is 18-24 and the Rams playoff record is 19-24.
The record is losing all 8 away games, set by several teams since the 16-game season began in 1990.
The Detroit Lions lost all 8 of their road games in 2009 and 2008, and all 8 home games as well in 2008 (0-16). The Miami Dolphins lost all 8 of their road games in 2007 (1-15), but also lost their game to the Giants at London's Wembley Stadium, which counted as a "home" game. The Houston Texans lost all 8 of their road games in 2005. (2-14). The San Diego Chargers lost all 8 of their road games in 2000 (1-15).
*Due to Hurricane Katrina, the New Orleans Superdome was unusable for the 2005 NFL season. Since none of their games were actually played "at home" in 2005, the New Orleans Saints had the most "road losses" at 13 (3-13). However, only 7 of those losses were "on the road" at an opposing team's stadium.
1972 Miami Dolphins are the only team to make it through an entire season undefeated. The 2007 New England Patriots were undefeated during the regular season, but lost in the Super Bowl.
In 1969, the Steelers finished the season at 1-13. That was the most amount of losses in team history in a single season.
Through the 2009 season, that is 104 by the 1905 team that was known as the Brooklyn Superbas. The most losses in a season the team has had since playing in Los Angeles is 99 by the 1992 team.
Chicago Cubs
Through the 2008 season, the fewest losses by an MLB team in a regular season is 36 by the 1906 Chicago Cubs. The 1906 Cubs are tied, with the 2001 Seattle Mariners, for most wins by a team in an MLB regular season with 116.
Portland trailblazers(52)
In 1969, the Steelers finished the season at 1-13. That was the most amount of losses in team history in a single season.
Through the 2009 season, that is 104 by the 1905 team that was known as the Brooklyn Superbas. The most losses in a season the team has had since playing in Los Angeles is 99 by the 1992 team.
lions
Chicago Cubs
Through the 2008 season, the fewest losses by an MLB team in a regular season is 36 by the 1906 Chicago Cubs. The 1906 Cubs are tied, with the 2001 Seattle Mariners, for most wins by a team in an MLB regular season with 116.
8
Philadelphia, 9-73
The 1986 Chicago Bears
Portland trailblazers(52)
The Detroit Lions, Losing ALL of their regular season game ending the season with 16 losses
The Philadelphia Phillies with the 10,000 mark last season.
the Cleveland Spiders in 1899 with 134 loses!