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| | American football -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-09-18) |
 | | In 1882 the system of downs was introduced to thwart Princeton's and Yale's strategy of controlling the ball without trying to score. |
 | | In 1883 the number of players was reduced, at Camp's urging, to eleven, and Camp introduced the soon standard arrangement of a seven-man offensive line with a quarterback, two halfbacks, and a fullback. |
 | | On September 3, 1895 the first professional football game was played, in (Click link for more info and facts about Latrobe, Pennsylvania) Latrobe, Pennsylvania, between the Latrobe (Click link for more info and facts about YMCA) YMCA and the Jeannette Athletic Club. |
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