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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 principal role of the centre-back, [10] [11] (or central defender [12]) (historically called a centre-half [13] [14]) is to block the opponent's players from scoring, and safely clearing the ball from the defensive half's penalty area. As their name suggests, they play in a central position.
Additionally, the quarterback may run with the football himself, as part of a designed play like the option run [11] or quarterback sneak, [12] or the quarterback could make an impromptu run on their own (called a "scramble") to avoid being sacked by the defense. [13] Depending on the offensive scheme used by their team, the quarterback's role ...
It was seen that the players outside scrimmage (the "pack", i.e. the forwards) were not limited to a defensive role, the tends and half-tends were renamed "back" and "half back" positions. As the game advanced, backs positioned at different depths (i.e. distances behind the forwards) were further differentiated into separate positions.
Throughout his career, Johan Cruyff was often deployed in a free role as a centre-forward with Ajax, Barcelona, and the Netherlands in the 1970s in Rinus Michels's fluid 1–3–3–3 formation, which was a key and trademark feature of the manager's total football system; although Cruyff was a prolific goalscorer in this position, he also ...
A football player or footballer is a sportsperson who plays one of the different types of football. The main types of football are association football , American football , Canadian football , Australian rules football , Gaelic football , rugby league , and rugby union .
Throughout the years, the role of the goalkeeper has evolved, due to the changes in systems of play, to become more active. The goalkeeper is the only player in association football allowed to use their hands to control the ball (other than when restarting play with a throw-in).
Their duties depend on the defensive scheme. The defensive responsibilities of the safety and cornerback usually involve pass coverage towards the middle and sidelines of the field. While American (11-player) formations generally use two safeties, Canadian (12-player) formations generally have one safety and two defensive halfbacks , a position ...