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History
T formation
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In American football, a T formation is a formation used by the offensive team in which three running backs line up in a row about five yards behind the quarterback, forming the shape of a "T".
The T formation, described as the "regular formation", in Fielding Yost's 1905 book Football for Player and Spectator
The T formation, described as the "regular formation", in Fielding Yost's 1905 book Football for Player and Spectator
Clark Shaughnessy, the "father of the T formation."
Clark Shaughnessy, the "father of the T formation."
American football positions
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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 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. This has resulted in the development of three task-specific "platoons" of players within any single team: the offense, the defense, and "special teams". Within these three separate "platoons", various positions exist depending on the jobs that the players are doing.
The offensive line (on left, in orange jerseys) consists of a center (with ball in hand ready to snap) with two guards on either side, and two tackles
The offensive line (on left, in orange jerseys) consists of a center (with ball in hand ready to snap) with two guards on either side, and two tackles.
A wide receiver (No. 87, in white) begins a play in the flanker position
A wide receiver (No. 87, in white) begins a play in the flanker position
The four defensive linemen (in red) have their hands on the ground in a "three point stance"
The four defensive linemen (in red) have their hands on the ground in a "three point stance"
This defense (in white) is in a base 4–3 set. Just behind the four defensive linemen (whose hands are on the ground) are three linebackers (Nos. 55, 3
This defense (in white) is in a base 4–3 set. Just behind the four defensive linemen (whose hands are on the ground) are three linebackers (Nos. 55, 3 and 16), and further back are two safeties (numbers 24 and 44). The two cornerbacks are off screen to the left and right.