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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. Like other offensive linemen , their objective is to block during each offensive play: physically preventing defenders from tackling or disrupting the offensive ball carrier with the ...
A standard football game consists of four 15-minute quarters (12-minute quarters in high-school football and often shorter at lower levels, usually one minute per grade [e.g. 9-minute quarters for freshman games]), [6] with a 12-minute half-time intermission (30 minutes in the Super Bowl) after the second quarter in the NFL (college halftimes are 20 minutes; in high school the interval is 15 ...
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.
gridiron 1. The field of play; a football field 2. A generalized term for American, Canadian, arena, and other related forms of football, especially in contrast with rugby football (rugby union, rugby league) and association football (soccer). See also Gridiron football The word derives from the same root as griddle, meaning a "lattice". The ...
The 4-3 defense, most commonly used in the NFL, employs two defensive tackles (and a defensive line of four men, with three linebackers behind them), while the 3-4 defense uses just a single defensive tackle, called the nose tackle (and a defensive line of three men, with four linebackers behind them). Defensive ends in a typical 3-4 have ...
Although spear tackles are allowed in gridiron football, a player may not use his helmet to tackle an opponent as the technique can cause serious injury to both players (more often the tackler, due to the force of reaction on the tackler, which is apt to be beyond the limit that the neck can handle) and also warrants a 15-yard penalty as well ...
Within the sport of gridiron football, the spearing technique was responsible for most of the catastrophic cervical spinal cord injuries and concussions, which is a result of axial loading. Recognition of such injuries resulted in rule changes in 1976, banning such tackles for high school and college football, after which incidence of these ...
The horse-collar tackle is a gridiron football maneuver in which a defender tackles another player by grabbing the back collar or the back-inside of an opponent's shoulder pads and pulling the ball carrier directly downward violently in order to pull his feet from underneath him.