In the 2009 season: the Colts and the Saints. First time in NFL history two teams have been 12-0 in the same season.
2009
No NFL teams went undefeated in 2009.
Colts and Saints.
Colts and Saints.
1972 Miami Dolphins, that is it
There are no more undefeated teams left in the National Football League during the 2010-2011 season
Dolphins back in the day. 71 I believe
AnswerColts, Broncos and Saints as of 10-26-09.
2007 Patriots 1972 Dolphins
im not sure of all them but i know that the Miami Dolphins have gone undefeated, and the New England Patriots have gone undefeated.
Patriots and the dolphins
San Francisco 49ers (5-0) - 1.000