If team A invariably loses to team B, their chances of remaining undefeated in a given season are effectively zero, assuming they play against team B at least once. Each loss to team B would contribute to their overall record, preventing them from achieving an undefeated status. Therefore, regardless of their performance against other teams, the certainty of a loss against team B guarantees that they cannot remain undefeated.
In the 1991 season the Washington Huskies went undefeated.
The Florida gators have never gone undefeated in a season
The Titans have never had an undefeated season. Their best seasons have been 13-3 on three occasions.
only before the season started.
nope
Yes
No. The 1972 Miami Dolphins are the only team to finish the season undefeated (17-0).
Presuming you mean so far this season, the remaining undefeated teams are the Saints, Vikings, Broncos and Colts (as of 10-21-09).
The Philidelphia Flyers went undefeated for a 35 game stretch in the 1979-80 season.
1954
Yes, they went undefeated in 1907 with a record of 3-0.
There has never been a Major League baseball team to go undefeated in a season.