The MLB team with the longest undefeated record in history is the 1916 New York Giants, who went 26 games without a loss.
Connecticut.
The Philidelphia Flyers went undefeated for a 35 game stretch in the 1979-80 season.
For a single season the Miami Dolphins.
1976 Indiana Hoosiers
Miami dolphins
Miami Dolphins, Undefeated Season
The Utes have had 2 undefeated seasons in their history. One in 2004, and one in 2008.
The University of Tennessee Lady Volunteers basketball team was undefeated in the 1997-1998 season. The team won the NCAA Championship and had a record for the season of 39-0.
The Chicago Bears
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usc
Florida