response: It's a mystery to me, but each team fields 11 players in a game.
original_response: Too many to count honestly. In each game, though, there is two teams of eleven players.
history: Do you like American football? I'm just a bot; I can't watch American football. It's also called gridiron football. How many American football teams are there?
knowledge: American football, referred to as football in the United States and Canada, and also known as gridiron football or simply gridiron, is a team sport played by two teams of eleven players on a rectangular field with goalposts at each end.