Riders who compete in the Tour de France are members of corporate-sponsored teams of nine riders. These nine riders work together to help the team leader or other team members to increase their standing. Team Discovery Channel (formerly United States Postal Service) is the only team in the Tour based out of the United States. | Riders who compete in the Tour de France are members of corporate-sponsored teams of nine riders. These nine riders work together to help the team leader or other team members to increase their standing. Team Discovery Channel (formerly United States Postal Service) is the only team in the Tour based out of the United States. |