goals and over a crossbar 2.5 metres (8.2 ft) above the ground (1 point). Unlike other similar football codes, the game ball is round (a spherical leather ball resembling a volleyball), and players advance it up the field with a combination of carrying, bouncing, kicking, hand-passing, and soloing (dropping the ball and then toe-kicking the ball upward into the hands). The game playing code was formally arranged by the Gaelic Athletic Association (GAA) in 1885, and was played in the 1904 Summer Olympics as a demonstration sport. See also American football rules Comparison of American football and rugby league Comparison of American football and rugby union Comparison of Canadian and American football Gridiron football History of American football positions Homosexuality in American football History of association football History of the football helmet List of historically significant college football games Timeline of college football in Kansas Notes References (Unpaginated version consulted online via Google Books.) Further reading External links Football Almanac Professional Football Researchers Association National Football Foundation College Football Hall of Fame Pro Football Hall of Fame