Only four teams in NFL history have finished perfect regular seasons: the 2007 Patriots (16-0), 1972 Dolphins (14-0), 1942 Bears (11-0) and 1934 Bears (13-0).
Only four teams in NFL history have finished perfect regular seasons: the 2007 Patriots (16-0), 1972 Dolphins (14-0), 1942 Bears (11-0) and 1934 Bears (13-0).