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A diagram showing an I formation on offense and a 4-3 formation on defense 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 ...
The T-formation, one of the most basic formations in football. The T formation is the precursor to most modern formations in that it places the quarterback directly under center (in contrast to its main competitor of its day, the single wing, which had the quarterback receiving the ball on the fly).
The end positions are fixed by rule, because "end" is a rule book term. As to the backfield, the top illustration preserves the principle of the names, reflecting distance from the line. However, the bottom illustration needs further explanation, having eliminated the halfbacks and introduced a new position name, "tailback" (TB).
Descriptions and diagrams to display offensive formations typically use the following symbols: QB = quarterback (the player who leads and informs the offense of the plays) C = center (the player who begins the play with a snap on the line and blocks afterward) G = guard (the player who blocks on the line beside the center)
Description: The positions in American football. The offense is shown in an I-formation and the defense is shown in a 4-3. Date: 30 June 2007: Source: Own work: Author: UserB: Permission (Reusing this file) I do not believe that this image qualifies for copyright protection.
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In the modern system of specialized units, offensive tackle and defensive tackle are separate positions, and the stand-alone term "tackle" refers to the offensive tackle position only. The offensive tackle (OT, T), sometimes specified as left tackle (LT) or right tackle (RT), is a position on the offensive line that flanks the two guards.
English: The relative positions of American and Canadian football officials in a eight-official system: The Referee (R) positions himself behind the offensive team, favoring the right side if the quarterback is a right-handed passer. The Center Judge (C) positions himself behind the offensive team, on the opposite side of the referee.