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Diagram of a Canadian football field, which is wider and longer than the American field. Gridiron football (/ ˈ ɡ r ɪ d aɪ. ər n / GRID-eye-ərn), [1] also known as North American football, [2] or in North America as simply football, is a family of football team sports primarily played in the United States and Canada.
American football is played on a football field that is 360 by 160 feet (109.7 by 48.8 m). [1] The longer boundary lines are sidelines, while the shorter boundary lines are end lines. Sidelines and end lines are out of bounds. Near each end of the field is a goal line; they are 100 yards (91.4 m) apart.
American football, referred to simply as football in the United States and Canada and also known as gridiron football, [nb 1] is a team sport played by two teams of eleven players on a rectangular field with goalposts at each end.
Field judge Brad Freeman (88) and line judge Jeff Seeman (45) at an NFL game in October 2014. In gridiron football, an official is a person who has responsibility in enforcing the rules and maintaining the order of the game. During professional and most college football games, seven officials operate on the field.
The two sports are considered the primary variants of gridiron football. American football is the most popular sport in the United States in terms of broadcast viewership audience. The most popular forms of the game are professional and college football , with the other major levels being high-school and youth football.
On an American football field there are a further 18 solid yard lines crossing the field, marked at 5 yards (4.6 m) intervals between each goal-line and the 50 yard line. These lines are named for the distance that they are from the nearest goal line, for example 5 yard line, 10 yard line, 35 yard line, etc. Rugby union pitches have only two ...
The goal line is the chalked or painted line dividing the end zone from the field of play in gridiron football. In American football the goal lines run 10 yards (9.1 m) parallel to the end lines, while in Canadian football they run 20 yards (18 m) parallel to the dead lines. In both football codes the distance is measured from the inside edge ...
In gridiron football, the safety (American football) or safety touch (Canadian football) is a scoring play that results in two points being awarded to the scoring team. Safeties can be scored in a number of ways, such as when a ball carrier is tackled in his own end zone or when a foul is committed by the offense in its own end zone.