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the Colts have never gone undefeated,,,only two teams have.1972 Miami Dolphins (14-0)2007 New England Patriots (16-0)
11
The Utes have had 2 undefeated seasons in their history. One in 2004, and one in 2008.
The Steelers have never had an undefeated season in their NFL history.
Two
Two
4
6
17 teams have gone undefeated in the regular season and of those only 1 (Indiana in 1976) has gone on to win the National Championship.
Marshall University's Thundering Herd football team has had three different undefeated seasons. These came in 1919, 1996 and 1999.
31 games
Through the 2009 season, 0. Their best season was 2001 when they went 11-1 and won the Pac 10 title. They wound up 3rd in the final rankings behind Miami and Florida.