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A pair of officials at a Maryland high school football game in September 2008. White knickers used to be worn by officials; black trousers are now standard.. For ease of recognition, officials are usually clad in a black-and-white vertically striped shirt and black trousers with a thin white stripe down the side (this was formerly white knickers with black/white striped stirrup stockings or ...
The relative positions of American football officials in a seven-official system: The Referee (R) positions himself behind the offensive team, favoring the right side if the quarterback is a right-handed passer. The Umpire (U) stands behind the defensive line and linebackers. The Head Linesman (H) stands at one end of the line of scrimmage.
The Umpire (U) stands behind the defensive line and linebackers. The Head Linesman (H) stands at one end of the line of scrimmage. The Line Judge (L) stands at the other end of the line of scrimmage. The Field Judge (F) works downfield behind the defensive secondary on the same sideline as the Line Judge.
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A diagram showing an I formation on offense and a 4-3 formation on defense In American football , the specific role that a player takes on the field is referred to as their position. Under the modern rules of American football, both teams are allowed 11 players [ 1 ] on the field at one time and have "unlimited free substitutions", meaning that ...
Diagram of a modern American football field. Diagram of an early 20th century version of an American football field. The rectangular field of play used for American football games measures 100 yards (91.44 m) long between the goal lines, and 160 feet (48.8 m) (53.3 yards) wide. The field may be made of grass or artificial turf. In addition ...
Diagram of the diagonal system of control showing the paths of the Referee (R) and the Assistant Referees (AR) The predominant system of positioning and division of responsibility used by football match officials throughout the world is known as the Diagonal system of control (DSC). The referee has final decision-making authority on all matters.
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