The Saint Louis Rams had the worst record in the 2009-2010 season, they ended their season 1-15.
2008-2009 Detroit Lions 0 - 16
For the 2009 season, Vanderbilt (2-10) has the worst record in the SEC East, and Mississippi State (5-7) has the worst record in the SEC West.
Worst performance current season :San Francisco 49'ers, Buffalo Bills (0-5 to start 2010)*Worst record preceding season : St. Louis Rams (1-15 in 2009)Worst record last two seasons : Detroit Lions (2-30 in 2008 and 2009, 28-64 since 2003Worst overall record for team : Houston Texans (49-79 through 2009)-----*2010 preliminary rankings had the Buffalo Bills, Cleveland Browns, and Oakland Raiders as the likely worst teams for the season.
I'm not sure but I think once in 2009 the Nationals had a 64-98 record Go Yanks and M's
if you are going by record, it is the new jersey nets and the minnesota timberwolves
The Celtics record was 62-20 for the 2008-2009 season.
Between 2000-2009 ... 94-29. During that time period, TCU's best season was 12-1 in 2009 and worst season was 5-6 in 2004.
Currently the Bills record is 3-6 for the 2009 season.
The Raiders 2009 record was 5-11.
In 2009, the Atlanta Falcons had a 9-7 record.
In 2009, the Cleveland Indians had a record of 65-97.