Does the tackle box in gridiron football extend through all the offensive linemen even if they're a long way apart?

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This is a more complex question than I initially thought, and most of that stems from some weird wording in the NFL rules. The provision that allows the QB to throw the ball away once he's outside the tackle position refers specifically to that - "the tackle position." (Rule 8, Section 2, Article 1, Item 1.) However, the tackle position is never fully defined. What is defined is the tackle box (Rule 3, Section 35) and the pocket area (Rule 3, Section 25). The pocket area refers to the "normal tackle position," which is a little subjective, but I think we can agree that Vereen is not in the normal tackle position in the above picture, but rather that the lineman second from the right of the center is in the normal tackle position.

The rules make reference to the tackle box when talking about unsportsmanlike conduct penalties (horse collar tackle, illegal chop blocks, illegal hits on defenseless players) but not in the rules on intentional grounding. The pocket area is...

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The simplest answer is exactly as Joe said: because them's the rules.

Most rules relating to offensive formations are designed to help out the defense; it's generally understood that because the offense knows what they're going to do to try to move the ball and the defense doesn't, the defense is at a significant disadvantage in their job. To assist the defense and thus help balance the game to prevent every game being an offensive shootout, the offense must give certain cues as to their intentions based on how they position their side on the field.

More specifically, the development of the "forward pass" in American football, differentiating it from most other games in the family which require laterals or rearward passes only, gives the offense a huge advantage in unpredictability. To balance this, the definition of a legal forward pass itself (especially the fact that it must not bounce off the turf; theoretically a lateral or rearward shovel pass can be bounced) as...

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American football glossary

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The following terms are used in American football and Canadian football, but see also the glossary of Canadian football.

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3-3-5 defense A variation of the Nickel formation with 3 linemen (2 De & 1 DT), 3 linebackers (2 OLB & 1 MLB), and 5 defensive backs (3 CB, 1 SS & 1 FS). Often called a 3-3 stack. Also called the "Rule Breaker" due to the fact that it often changes blocking schemes for the offensive line. 3-4 defense a defensive formation with 3 linemen and 4 linebackers. A professional...
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The tackle box in football is an area that is commonly known as the pocket. When a quarterback sets up to pass, particularly at the professional level, he generally does that in the pocket. He will drop back five to seven steps, survey the field and then deliver the ball to a receiver. The quarterback, his blockers and the defensive players must follow several rules when they are in this area.

The tackle box extends two yards outside the two offensive tackles stationed on the line of scrimmage and goes backward all the way -- in theory -- to the offensive team's goalline. On the standard offensive line, players will line up at left tackle, left guard, center, right guard and right tackle. The starting points of the tackle box are 2 yards to the left of the left tackle's shoulder and 2 yards to the right of the right tackle's shoulder.

When inside the tackle box, the quarterback must attempt to throw the ball...

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The defensive team in American football is the team that does not have possession of the ball and is trying to keep the other team's offense from scoring. There can be 11 players at various positions on the field for the defense on a play, just as there can be for the offense. The defensive positions in football can be grouped into three general categories: defensive linemen, linebackers and defensive backs. Defensive linemen generally are aligned the closest to the ball, along the line of scrimmage, as exemplified by the players in white jerseys in the photo below. The linebackers usually are a little behind the defensive line or a little to the side, and the defensive backs typically are the farthest back or the farthest to the sides.

Defensive Linemen

There are two types of positions on the defensive line: tackles, who are positioned closest to the ball, and ends, who line up outside the tackles. These usually are the largest defensive players, with the tackles...

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2-point Conversion - One of the options a team has after scoring a touchdown. Instead of kicking a PAT for one point, the scoring team can attempt a 2-point conversion, where they run an actual play. If successful, it’s worth two points.

2-point Stance

- When a lineman is only standing on the line of scrimmage and doesn’t have either hand on the ground, they are standing in a 2-point stance. The number of ‘points’ refers to the number of spots that the player is making contact with the ground; in this case, it’s only two points of contact (the feet).

3-Point Stance

- When a lineman has one hand on the ground and is crouched over that hand before the play starts, that lineman is in a 3-point stance. The number of ‘points’ refers to the number of spots that the player is...

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In American football and Canadian football, a lineman is a player who specializes in play at the line of scrimmage. The linemen of the team currently in possession of the ball are the offensive line, while linemen on the opposing team are the defensive line. A number of NFL rules specifically address restrictions and requirements for the offensive line. The defensive line is covered by the same rules that apply to all defensive players.[1] Linemen are usually the largest players on the field in both height and weight, since their positions usually require less running and more strength than skill positions.

Offensive line

An offensive lineman's motion during a play is often limited to just a few quick steps to establish position, followed by a wrestling match similar to sumo. Offensive linemen thus tend to be the largest players on the field, with excellent agility and balance but limited straight-line running speed. Most pro and college football offensive lineman...

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Learn more about Glossary of American football


The following terms are used in American football and Canadian football. See also: wiktionary:Category:Football (American)

[edit] See also

n-m defense a defense with n down linemen and m linebackers, such as: 3-3 a defense with 3 linemen, 3 linebackers, and 5 defensive backs. Often called a 3-3 stack. 3-4 defense a defensive formation with 3 linemen and 4 linebackers. A professional derivative in the 1970's of the earlier Oklahoma or "50" defense, which had 5 linemen and 2 linebackers. The 3-4 outside linebackers resemble "stand-up ends" in the older defense. 4-3 defense a defensive formation with 4 linemen and 3 linebackers. Several variations are employed. First used by coach Joe Kuharich and popularized by Tom Landry. 4-4-4 Defense Infamous defense, coined by coach and color commentator John Madden when referring to a penalty having 12 men on the field. 4-6 defense (pronounced four-six defense) a...
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The positioning of the offensive tackles in a formation.

Tackle is a playing position in American and Canadian football. Historically, in the one-platoon system prevalent in the late nineteenth and early twentieth centuries, a tackle played on both offense and defense. 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) is a position on the offensive line, left and right. Like other offensive linemen, their job is to block: to physically keep defenders away from the offensive player who has the football and enable him to advance the football and eventually score a touchdown. The term "tackle" is a vestige of an earlier era of football in which the same players played both offense and defense.

A tackle is the strong position on the offensive line. They power their blocks with quick steps and maneuverability....

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Some comments from my side:

1.) The stability check in the BODE diagram concerns the LOOP GAIN response only (because once you did mention "closed-loop system" in your text.)

2.) The shown system is "conditionally stable". That means: It is stable - regardless the properties at the frequency A. However, if you REDUCE the gain within the loop until the gain crosses the point A (the phase remains unchanged) the closed-loop system will be unstable.

Such conditional stable system should be avoided because a gain reduction can happen due to aging or other damping effects. Remember: Classical feedback systems with a continuos decreasing loop phase will become unstable (under closed-loop conditions) for rising gain values (beyond a certain limit) only.

As to your next question - the input signal Vi does not influence stability properties at all. Stability is determined by the loop components only. That is the reason, we investigate the loop gain...

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American football (known as football in the United States and gridiron in some other countries) is a sport played by two teams of eleven players on a rectangular field 120 yards long by 53.33 yards wide with goalposts at each end. The offense attempts to advance an oval ball (the football)[2] down the field by running with or passing it. They must advance it at least ten yards in four downs to receive a new set of four downs and continue the drive; if not, they turn over the football to the opposing team. Points are scored by advancing the ball into the opposing team's end zone for a touchdown, kicking the ball through the opponent's goalposts for a field goal or by the defense tackling the ball carrier in the offense's end zone for a safety. The team with the most points at the end of a game wins.

American football evolved in the United States, originating from the sport of rugby football. The first game of American football was played on November 6, 1869 between two...

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American football, known as football in the United States, is a team sport played between two teams of 11 players with an oval ball on a rectangular field 120 yards long and 53.3 yards wide with goalposts at either end. The team in possession of the ball (the offense) attempts to advance down the field by running with or passing the ball. In order to continue their drive, the offense must advance the ball at least 10 yards down the field in a series of four downs. If they succeed, they receive a new set of four downs to continue their drive, but if they fail, they lose control of the ball to the opposing team. The offense can score points by advancing the ball into the end zone (a touchdown) or by place- or drop-kicking the ball through the opponent's...

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