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The A-11 Football League (A11FL) was a proposed professional spring outdoor football league that was led in part by A-11 creators Kurt Bryan and Steve Humphries and planned on utilizing the A-11 offense exclusively. The A11FL was scheduled to debut in May 2014 with two nationally televised "Showcase Games" and then kick off its first regular ...
The team with the ball (the offense) has four plays (downs) to advance at least 10 yards. If the offense succeeds in advancing at least 10 yards, they earn a "first down," and the number of tries allotted is reset. The offense is again given four tries to advance an additional 10 yards, starting from the spot to which they last advanced.
In American football, the specific role that a player takes on the field is referred to as their position. Under the modern rules of American football, both teams are allowed 11 players [1] on the field at one time and have "unlimited free substitutions", meaning that they may change any number of players during any dead ball situation.
The "two platoons", offense and defense, are an integral part of the game today. Although professional football has uninterruptedly retained the two-platoon system since 1949, in 1953 the NCAA took the collegiate game back to the one-platoon system with new limited substitution rules, changes made ostensibly for financial and competitive reasons.
Because football is a high-contact sport requiring a balance between offense and defense, many rules exist that regulate equality, safety, contact, and actions of players on each team. It is very difficult to always avoid violating these rules without giving up too much of an advantage. [ 4 ]
In 2009, the loophole which allowed the A-11 to be used was closed by the National Federation of State High School Associations by a 46–2 vote. [7] [8] In 2011, Bryan and Humphries began planning a professional football league that allowed the A-11 offense, which they felt made for a safer and more wide-open game. [9]
The first detailed sets of rules published by football clubs (rather than a school or university) were those of Sheffield F.C. (written 1858, published 1859) which codified a game played for 20 years until being discontinued in favour of the Football Association code, and those of Melbourne FC (1859) which are the origins of Australian rules ...
In football, the formation describes how the players in a team are positioned on the field. Many variations are possible on both sides of the ball, depending on the strategy being employed. On offense, the formation must include at least seven players on the line of scrimmage, including a center to start the play by snapping the ball.