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A standard football game consists of four 15-minute quarters (12-minute quarters in high-school football and often shorter at lower levels, usually one minute per grade [e.g. 9-minute quarters for freshman games]), [6] with a 12-minute half-time intermission (30 minutes in the Super Bowl) after the second quarter in the NFL (college halftimes are 20 minutes; in high school the interval is 15 ...
Because football is a high-contact sport requiring a balance between offense and defense, many rules exist that regulate equality, safety, contact, and actions of players on each team. It is very difficult to always avoid violating these rules without giving up too much of an advantage.
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 ...
American football is undoubtedly the most popular sport in the US, with millions of Americans converging to watch the NFL Super Bowl annually. Besides the massive fan base in its country of origin ...
A Wilson modern American football, as used in the National Football League In an NFL game, the home team must have 36 balls for an outdoor game or 24 for an indoor game, and they must be available for the referee to test with a pressure gauge two and a half hours before the game to keep players from cheating.
College football, governed by the NCAA also penalizes excessive celebrations with a 15-yard penalty. NCAA Football Rule 9-2, Article 1(a)(1)(d) prohibits "Any delayed, excessive, prolonged or choreographed act by which a player (or players) attempts to focus attention upon himself (or themselves)"; in addition, Rule 9-2, Article 1(a)(2) asserts that "After a score or any other play, the player ...
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The first American football game was played on November 6, 1869, between two college teams, Rutgers and Princeton, using rules based on the rules of soccer at the time. A set of rule changes drawn up from 1880 onward by Walter Camp , the "Father of American Football", established the snap , the line of scrimmage , eleven-player teams, and the ...