American football positions American football positions In American football each team has 11 players on the field at one time. The specific role that a player takes on the field is called his position. Under the modern rules of American football, teams are allowed unlimited substitutions; that is, teams may change any number of players after any play. This has resulted in the development of three "platoons" of players: the offense (the team with the ball, which is trying to score), the defense (the team trying to prevent the other team from scoring, and to take the ball from them), and the special
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