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Strategy plays a crucial role in American football. Both teams carefully plan various aspects of their gameplay in an effort to win. This includes deciding on formations, selecting players for specific positions, and assigning roles and instructions to each player on offense and defense.
Throughout the game, each team constantly adjusts their strategy, responding to the other's strengths and weaknesses. They experiment with different approaches to outmaneuver or overpower their opponent. On offense, a team's objective is to score through touchdowns and field goals, all while remaining vigilant of the opposing team's defensive strategy. On defense, the goal is to prevent the offense from scoring, as well as attempting to intercept the ball and shift momentum in their favor.
The primary goal of the offense is to score points. [1] To achieve this, coaches and players design and execute plays based on several factors: the players involved, the opponent's defensive strategy, the time remaining before halftime or the end of the game, and the number of points needed to secure a win. Offensively, teams can also aim to prolong possession of the ball to limit the opponent's scoring opportunities. Drives, or offensive scoring chances, come to an end when the team fails to move the ball 10 yards or turns it over via fumble or interception.
On offense, there are three types of players: linemen, backs, and wide receivers. The positions and duties of these players can vary depending on the offensive scheme used by each team.
While position names and abbreviations may differ between team playbooks, the following are among the most commonly recognized:
(These are understood to be players on the line other than the ends, also referred to as "interior linemen." The ends—i.e., players at the ends of the line—are discussed under "Receivers" below.)
Backs are named for their position behind the line of scrimmage at the start of a play.
(Eligible receivers are the ends and the backs, excluding an NFL quarterback lined up "under center." Not all backs are classified as wide receivers.)
Before the ball is snapped, the offensive team lines up in a formation. The type of formation used is determined by the game situation. Teams often employ "special formations" for specific scenarios, such as obvious passing situations, short yardage, or goal-line plays. Some formations are designed for a particular game to confuse the defense.
There are nearly unlimited possible formations, but a few of the more common ones include:
When the team is in formation and the quarterback gives a signal—either by calling out instructions or using a non-verbal cue known as a "silent count"—the centre snaps the ball to the quarterback, and a play begins.
A running play occurs when the quarterback hands the ball to another player, who then attempts to carry it past the line of scrimmage to gain yards. Alternatively, the quarterback may keep the ball and run beyond the line of scrimmage themself. In both scenarios, the offensive line's primary job is to run block, preventing defensive players from tackling the ball carrier.
The choice of running play depends on the offensive team’s strengths, the defensive weaknesses, and the distance required to score a touchdown or gain a first down. There are many types of running plays, including:
When a passing play occurs, the backs and receivers run specific patterns, or routes, while the quarterback throws the ball to one of the players. During these plays, the offensive line's primary job is to prevent defensive players from tackling the quarterback before he throws the ball (a "sack") or disrupting the quarterback in any other way during the play. [2]
Passing plays generally cover more ground than running plays, making them ideal for situations where the offensive team needs to gain a large number of yards. Even if a team does not need to gain a large number of yards, relying solely on running plays could make the offense predictable. Run plays are often used to tire out defensive linemen and to set up passing plays.
One way to set up a passing play is through a play-action pass. In this strategy, the quarterback and running back fake a run play while the receivers run routes. The goal is to deceive the defense into thinking it's a run play, allowing the receivers to get open for an easier completion. Successfully running the ball can also make play-action passes more effective, as the defense may be caught off guard, leading to bigger plays if the pass is completed.
Different types of pass plays include:
One general rule teams must consider when developing their passing strategy is that only certain players are allowed to catch forward passes. If a player who is not an eligible receiver receives a thrown pass, the team may be penalized. However, if a team reports to the referee before a play that a normally ineligible receiver will act as an eligible receiver for that play, that player is allowed to catch passes. Teams use this strategy occasionally to confuse the defense or force them to pay more attention to potential pass catchers.
Using a combination of passing and running plays, the offense aims to gain the yards needed for a first down, touchdown, or field goal. Over the years, several football coaches and offensive coordinators have developed well-known and widely used offensive strategies:
Distinct from the offensive strategies or philosophies that govern how a team moves the ball down the field—whether through downfield passes, short passes, or inside runs—are the methods used for calling plays. These play calling systems often developed alongside certain offensive strategies, though they can be adapted to any strategy. The differences between these systems lie in the specific language used to communicate plays to players. In the NFL, three basic systems predominate: [3]
The goal of defensive strategy is to prevent the opposing offense from gaining yards and scoring points. This can be achieved either by stopping the offense from advancing the ball beyond the line of scrimmage or by taking the ball away from the offense (referred to as a turnover) and scoring points themselves. [4]
On defense, there are three types of players: linemen, linebackers, and defensive backs (also called secondary players). Their specific positions on the field and duties during the game vary depending on the type of defense being used and the kind of offense the defense is facing.
The defensive line lines up in front of the offensive line. The responsibility of the defensive lineman is to prevent the offensive line from opening up running lanes for the running back or to sack the quarterback, depending on whether the play is a passing or running play. Most of the time, defensive linemen attack the offensive line, but in some plays, they drop back into pass coverage to confuse the opposing team.
Linebackers stand behind the defensive linemen or set themselves up on the line of scrimmage. Depending on the defensive strategy being used, a linebacker’s responsibilities can include helping to stop the run, rushing the quarterback, or dropping back in pass protection.
Defensive backs stand behind the linebackers. Their primary responsibility is pass coverage, although they can also be involved in stopping the run or rushing the quarterback.
The most common way to describe a basic defensive formation is by stating the number of linemen followed by the number of linebackers. The number of defensive backs is usually not mentioned, though if it is (such as in the "3–3–5"), the number typically appears after the linebackers. Thus, the formula would be (# of linemen)–(# of linebackers)–(# of defensive backs [if stated]) in these situations. This naming rule does not always apply when the personnel for a certain formation are lined up in a way that changes the function of the players in the defense. For example, the "3–5–3" actually uses the 3–3–5 personnel but arranges the five defensive backs with "3 deep," thus grouping the other two defensive backs with the linebackers.
By far the most common alignments are four down linemen and three linebackers (a "4–3" defense) or three down linemen and four linebackers ("3–4"), but other formations such as five linemen and two linebackers ("5–2") or three linemen, three linebackers, and five defensive backs ("3–3–5") are also used by a number of teams.
On plays where the defense expects the offense to pass, emphasis is often placed on the number of defensive backs. In a basic 4–3 or 3–4 defense, there are four defensive backs on the field (2 cornerbacks [CB], 1 strong safety [SS], and 1 free safety [FS]). When one of the linemen or linebackers is removed and an additional defensive back is added, common alignments for these five defensive back packages include the "nickel" package, which has 3 CB, 1 SS, and 1 FS, and the "3–3–5," a nickel package variant that includes either 2 CB, 2 SS, and 1 FS, or 3 CB, 1 SS, and 1 FS like the standard nickel package. [6] [7] [8] When a sixth defensive back is inserted, it is known as a "dime" package (4 CB, 1 SS, 1 FS). In rare instances when a seventh defensive back is inserted, it is known as a "quarter" package (5 CB, 1 SS, 1 FS or 4 CB, 2 SS, 1 FS). [9] As with offensive formations, there are many combinations that can be used to set up a defense. Unusual defensive alignments are constantly used in an effort to neutralize a given offense's strengths. For example, in Super Bowl XXV, the New York Giants used a formation with two down linemen, four linebackers, and five defensive backs, a strategy that prevented their opponents, the Buffalo Bills, from completing long passes. In a 2004 game, the New England Patriots used no down linemen and seven linebackers for two plays against the Miami Dolphins.
Some of the more familiar defensive formations include:
The defense must wait until the ball is snapped by the opposing center before moving across the line of scrimmage or otherwise engaging any of the offensive players. Once the opposing offense has broken their huddle and lined up in their formation, defensive players often call out instructions to each other to make last-second adjustments to the defense.
To prevent the opposing offense from gaining yards on the ground, a defense might focus more on their run defense. This typically involves placing more players close to the line of scrimmage to reach the ball carrier more quickly. This strategy is often used when the opposing offense needs to gain only a few yards to achieve a first down or score a touchdown.
When the defense anticipates that the opposing offense will pass the ball, they shift into pass defense. There are two general schemes for defending against the pass:
There are times when a defense believes that the best way to stop the offense is to rush the quarterback. This involves sending five or more players charging at the line of scrimmage in an attempt to tackle the quarterback before he can throw the ball or hand it off. Any player on the defense is allowed to rush the quarterback, and many schemes have been developed over the years that involve complicated or unusual blitz "packages".
Defensive strategies differ somewhat from offensive strategies in that, unlike offenses which have very specific, detailed plans and assignments for each player, defenses are more reactive. Each player's general goal is to "stop the offense" by tackling the ball carrier, breaking up passing plays, taking the ball away from the offense, or sacking the quarterback. While precision and timing are critical to offensive strategy, defensive strategies often emphasize aggressiveness and the ability to react to plays as they develop.
Nevertheless, many defensive strategies have been developed over the years that coaches use as a framework for their general defense, making specific adjustments based on their players' capabilities and the opponent they are facing.
Some of the most commonly known and used defensive strategies include:
The special teams unit is a group of players who take the field during kickoffs, free kicks, punts, and field goal attempts. Most football teams' special teams include one or more kickers, a long snapper (who specializes in accurate snaps over long distances), kick returners who catch and carry the ball after it is kicked by the opposing team, and blockers who defend during kicks and returns.
Most special teams are composed of players who act as backups or substitutes on the team's offensive and defensive units. Due to the risk of injury, it is uncommon for a starting offensive or defensive player to also play on a special teams unit.
A variety of strategic plays can be attempted during kickoffs, punts, and field goals to surprise the opposition and score points, gain yardage or first downs, or recover possession of the kicked ball.
A kickoff occurs at the beginning of each half, overtime period (not in college), and following each touchdown, successful field goal, or safety. Strategically, the coach of the kicking team may choose to execute the kickoff in one of several ways:
The "no punting" strategy forgoes punting altogether and instead attempts to convert on as many fourth downs as possible. This strategy has been implemented at Pulaski Academy, a top-ranked prep school, [10] and has been advocated by Gregg Easterbrook in his Tuesday Morning Quarterback column and author Jon Wertheim. Fourth down decisions to punt have been analysed mathematically by David Romer. [11]
Field goals are worth one point after a scored touchdown or three points if a team opts for a field goal attempt without scoring a touchdown but is within a suitable range for the kicker.
If the receiving team does not catch the ball, the kicking team may try to down it as close as possible to the opposing team's end zone. This can be achieved by either catching the ball (typically when close to the end zone to prevent a touchback) or by surrounding the ball and allowing it to roll or bounce as close as possible to the end zone without touching it. If the ball appears to be rolling or bouncing into the end zone, a player may run in front of the goal line to attempt to bat it down or catch it. If a member of the kicking team catches the ball before a member of the receiving team does, the play is blown dead by the official, and the receiving team takes possession at the spot where the ball was touched by the kicking team.
Therefore, it is strategically important for kicking teams to get as close to the ball as possible after a punt so they can quickly tackle a returner, down the ball as near to the opposing team's end zone as possible, and, if feasible, recover the ball after a fumble to regain possession.
Canadian football, or simply football, is a sport in Canada in which two teams of 12 players each compete on a field 110 yards (101 m) long and 65 yards (59 m) wide, attempting to advance a pointed oval-shaped ball into the opposing team's end zone.
In gridiron football, not all players on offense are entitled to receive a forward pass: only an eligible pass receiver may legally catch a forward pass, and only an eligible receiver may advance beyond the neutral zone if a forward pass crosses into the neutral zone. If the pass is received by a non-eligible receiver, it is "illegal touching". If an ineligible receiver is beyond the neutral zone when a forward pass crossing the neutral zone is thrown, a foul of "ineligible receiver downfield" is called. Each league has slightly different rules regarding who is considered an eligible receiver.
In gridiron 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, whose job is to help protect the quarterback from getting sacked for a loss, or worse, fumbling. The defensive line is covered by the same rules that apply to all defensive players. 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.
A wide receiver (WR), also referred to as a wideout, and historically known as a split end (SE) or flanker (FL), is an eligible receiver in gridiron football. A key skill position of the offense, WR gets its name from the player being split out "wide", farthest away from the rest of the offensive formation.
In gridiron football, blitzing is a tactic used by the defense to disrupt pass attempts by the offense. During a blitz, a higher than usual number of defensive players will rush the opposing quarterback, in an attempt either to tackle them or force them to hurry their pass attempt.
This is a glossary of terms used in Canadian football. The Glossary of American football article also covers many terms that are also used in the Canadian version of the game.
Gameplay in American football consists of a series of downs, individual plays of short duration, outside of which the ball is or is not in play. These can be plays from scrimmage – passes, runs, punts or field goal attempts – or free kicks such as kickoffs and fair catch kicks. Substitutions can be made between downs, which allows for a great deal of specialization as coaches choose the players best suited for each particular situation. During a play, each team should have no more than 11 players on the field, and each of them has specific tasks assigned for that specific play.
The 46 defense is an American football defensive formation, an eight men in the box defense, with six players along the line of scrimmage. There are two players at linebacker depth playing linebacker technique, and then three defensive backs. The 46 defense was originally developed and popularized with the Chicago Bears by their defensive coordinator Buddy Ryan, who later became head coach of the Philadelphia Eagles and Arizona Cardinals.
A formation in American football refers to the position players line up in before the start of a down. There are both offensive and defensive formations and there are many formations in both categories. Sometimes, formations are referred to as packages.
In sports, a starting lineup is an official list of the set of players who will participate in the event when the game begins. The players in the starting lineup are commonly referred to as starters, whereas the others are substitutes or bench players.
Center or centre (C) is a position in American football. The center is the innermost lineman of the offensive line on a football team's offense. The center is also the player who passes the ball between his legs to the quarterback at the start of each play.
In football, the tackle-eligible play is a forward-pass play in which coaches will attempt to create mismatches against a defense by inserting an offensive tackle, into an offensive formation as an eligible receiver, usually as a tight end or as a fullback. This is done by changing the formation of the offensive line, via positioning two linemen on one side of the center and three linemen on the other.
A trick play, also known as a gadget play, gimmick play or trickeration, is a play in gridiron football that uses deception and unorthodox tactics to fool the opposing team. A trick play is often risky, offering the potential for a large gain or a touchdown if it is successful, but with the chance of a significant loss of yards or a turnover if not. Trick plays are rarely used not only because of the riskiness, but also to maintain the element of surprise for when they are used.
A halfback (HB) is an offensive position in American football, whose duties involve lining up in the offensive backfield and carrying the ball on most rushing plays, i.e. a running back. When the principal ball carrier lines up deep in the backfield, and especially when that player is placed behind another player (usually a blocking back), as in the I formation, that player is instead referred to as a tailback (TB).
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.
In American football, a play is a close-to-the-ground plan of action or strategy used to move the ball down the field. A play begins at either the snap from the center or at kickoff. Most commonly, plays occur at the snap during a down. These plays range from basic to very intricate. Football players keep a record of these plays in a playbook.
The A-11 offense is an offensive scheme that has been used in some levels of amateur American football. In this offense, a loophole in the rules governing kicking formations is used to disguise which offensive players would be eligible to receive a pass for any given play. It was designed by Kurt Bryan and Steve Humphries of Piedmont High School in California.
The following terms are used in American football, both conventional and indoor. Some of these terms are also in use in Canadian football; for a list of terms unique to that code, see Glossary of Canadian football.
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