American football may be a sport played between 2 groups of 11 with the target of scoring points by advancing the ball into the opposing team's finish zone. it's known within the us merely as pro football , and it should be said as gridiron informally or outside the us and Canada. The ball will be advanced by running with it or throwing it to a teammate. Points will be scored by carrying the ball over the opponent's goal line, catching a pass thrown over that goal line, kicking the ball through the opponent's goal posts or tackling an opposing ball carrier in his own finish zone.
In the us, the foremost forms are highschool pro football, school football and pro football , that are played beneath slightly completely different rules. highschool football is ruled by the National Federation of State highschool Associations, whereas school football by the National Collegiate Athletic Association and National Association of Intercollegiate Athletics. the foremost league for pro football is that the National football League (NFL). different minor skilled leagues conjointly exist within the U.S., and should even have slightly completely different rules from those of the NFL.
The sport is additionally played in Europe,Japan, Mexico, and different many countries. The International Federation of yankee football acts as a world governing body for the game, however the organization has very little standing within the us.
American football is closely associated with Canadian football however with some variations in rules and therefore the field.Both sports will be traced to early versions of association pro football and rugby football .
