Buffalo Bills, New England Patriots, New York Jets, San Diego Chargers, Tennessee Titans, Oakland Raiders, Kansas City Chiefs, Denver Broncos, and Dallas Cowboys.
The Cowboys' first season in the NFL was 1960.
The other eight teams were charter members of the American Football League when it began play in 1960 and joined the NFL in the 1970 season when the AFL and NFL merged. In 1960, the Patriots were the Boston Patriots, the Jets were the New York Titans, the Chargers were the Los Angeles Chargers, the Titans were the Houston Oilers, and the Chiefs were the Dallas Texans.
There has been 32 teams in the NFL since 2002.
No NFL teams went undefeated in 2009.
Indianapolis 2009
2009
Brett favre on the vikings... sadly:(
2007 Patriots 1972 Dolphins
The Pittsburgh Stealers and the Tennessee Titans
The two NFL football teams played in Monday night football on September 21st 2009 was Miami Dolphins @ New York Jets.
In the 2009 season: the Colts and the Saints. First time in NFL history two teams have been 12-0 in the same season.
Rams and the Lions
No nfl teams are playing today
32 NFL football teams