The NFL and College Football primary use a seven-official system. Official American football - Referee. A referee (R) is responsible for the general supervision of the game and has the final authority on all rulings. He can be identified by his white cap, while the other officials wear black ones. During each play from scrimmage, he positions himself behind the offensive ...

See also:

Official American football, Official American football - Equipment, Official American football - Positions and responsibilities, Official American football - Referee, Official American football - Umpire, Official American football - Head Linesman, Official American football - Line Judge, Official American football - Field Judge, Official American football - Side Judge, Official American football - Back Judge, Official American football - Other officiating systems, Official American football - Trivia

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