Comparison of American football and rugby union possession of the ball at their own 20-yard (25 yard line in College Football) line. An important difference between the two sports involves the aftermath of a score. In American football, the scoring team kicks off, except after a safety. In rugby union, the team conceding the score kicks off (in rugby sevens, a variant of rugby union featuring seven players per side, the scoring team kicks off). An American football team consists of an offensive unit, a defensive unit and a "special teams" unit (involved in kicking and kick returns). Only eleven players can be on the field at
John Field (American football) native. He moved with his family to Oklahoma as a boy. At the time of the 1900 United States Census, Field was living with his parents and three sisters (Eva, Ruth and Luella) in Washington, D.C.. His father was employed at that time as an attorney. Field attended high school at the local high school in Washington, D.C. Field enrolled at Yale University. He played for Yale's freshman football team in 1907 and then at the halfback and fullback positions for the Yale Bulldogs football team from to 1908 to 1910. During his three years as a player, the Yale