i would say the San Diego Padres or the kc royals you never here alot about them but i could be wrong because there is other teams like the pirates,nationals,and reds its hard to find out what is the least pouluar team hope that helps.
Manchester United
real madrid
Celtic football club
1986 University of Miami football.
Philadelphia Flyers, they play dirty but, in a bad way.
Patriots
Philadelphia Flyers
The Arkansas Razorbacks from the University of Arkansas are the most successful Arkansas football team. Arkansas does not have a National Football team, therefore the most successful team would be a college team.
At The Moment The Most Popular Football Team In The World Is Manchester United
Basically any player on the opposing team! Cristiano Ronaldo isn't a favourite with opposing fans, but Robbie Savage has had a lot of abuse through out his career.
i English football. or real football, my team Birmingham city borrowed our hated neighbours the money to buy their first set of floodlights
University of Florida