In American football, a spy is a defensive player assigned to cover the opposing team's quarterback man-to-man.
This strategy is generally used against "dual-threat" quarterbacks who are capable of rushing when passing plays break down. The defensive player floats near the line of scrimmage, following the quarterback's movements.
Spies are also sometimes known as "keys".Generally, spies are linebackers.
The quarterback, colloquially known as the "signal caller", is a position in gridiron football. Quarterbacks are members of the offensive platoon and mostly line up directly behind the offensive line. In modern American football, the quarterback is usually considered the leader of the offense, and is often responsible for calling the play in the huddle. The quarterback also touches the ball on almost every offensive play, and is almost always the offensive player that throws forward passes. When the QB is tackled behind the line of scrimmage, it is called a sack.
A cornerback (CB) is a member of the defensive backfield or secondary in gridiron football. Cornerbacks cover receivers most of the time, but also blitz and defend against such offensive running plays as sweeps and reverses. They create turnovers through hard tackles, interceptions, and deflecting forward passes.
Linebacker (LB) is a playing position in gridiron football. Linebackers are members of the defensive team, and line up three to five yards behind the line of scrimmage and the defensive linemen. They are the "middle ground" of defenders, playing closer to the line of scrimmage than the defensive backs (secondary), but farther back than the defensive linemen.
In gridiron football, a sack occurs when the quarterback is tackled behind the line of scrimmage before throwing a forward pass, when the quarterback is tackled behind the line of scrimmage in the "pocket" and without clear intent, or when a passer runs out of bounds behind the line of scrimmage due to defensive pressure. This often occurs if the opposing team's defensive line, linebackers or defensive backs are able to apply pass pressure to quickly get past blocking players of the offensive team, or if the quarterback is unable to find a back to hand the ball off to or an available eligible receiver to catch the ball, allowing the defense a longer opportunity to tackle the quarterback.
Julius Frazier Peppers is an American former professional football player who was a defensive end and linebacker in the National Football League (NFL). He played college football for the North Carolina Tar Heels, where he was recognized as a unanimous All-American, and was selected by the Carolina Panthers second overall in the 2002 NFL draft, and also played for the Chicago Bears from 2010 through 2013 and the Green Bay Packers from 2014 to 2016. After rejoining the Panthers for the 2017 season, he retired after the 2018 NFL season.
Defensive end (DE) is a defensive position in the sport of gridiron football.
Strategy forms a major part of American football.
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.
Nine-man football is a type of American football played by high schools that are too small to field teams for the usual 11-man game. In the United States, the Minnesota State High School League, North Dakota High School Activities Association, South Dakota High School Activities Association, and Wyoming High School Activities Association hold high-school state tournaments in nine-man football. It is the earliest attested reduced-man variant of football, being attested as early as 1889 in an Amateur Athletic Union-sanctioned college football game at the original outdoor Madison Square Garden.
Gary Wayne Kubiak is an American former professional football player and coach in the National Football League (NFL). He played as a quarterback for the Denver Broncos before coaching, serving as head coach for the Houston Texans from 2006 to 2013 and the Broncos from 2015 to 2016 before stepping down from the position on January 1, 2017, citing health reasons.
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).
Safety is a position in gridiron football on the defense. The safeties are defensive backs who line up ten to fifteen yards from the line of scrimmage. There are two variations of the position: the free safety and the strong safety. Their duties depend on the defensive scheme. The defensive responsibilities of the safety and cornerback usually involve pass coverage towards the middle and sidelines of the field. While American (11-player) formations generally use two safeties, Canadian (12-player) formations generally have one safety and two defensive halfbacks, a position not used in the American game.
In American football, the 3–4 defense is a common defensive alignment consisting of three down linemen and four linebackers. It is called a "base defense" because it will readily switch to other defensive alignments as circumstances change. Alternatively, some defenses use a 4–3 defense: four down linemen and three linebackers.
Christopher Howard Long is an American former football defensive end who played in the National Football League (NFL) for 11 seasons. The son of Hall of Fame defensive end Howie Long and older brother of NFL guard Kyle Long, he played college football at the University of Virginia and won the Ted Hendricks Award as a senior. Long was selected by the St. Louis Rams second overall in the 2008 NFL Draft, where he spent eight seasons. He later played one season for the New England Patriots and two for the Philadelphia Eagles, winning a Super Bowl title with each.
Zone coverage is a defense scheme in gridiron football used to protect against the pass.
In American football, a 4–3 defense is a defensive alignment consisting of four down linemen and three linebackers. It is called a "base defense" because it is the default defensive alignment used on "base downs". However, defenses will readily switch to other defensive alignments as circumstances change. Alternatively, some defenses use a 3–4 defense.
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.
Michael Mark Pettine is an American football coach who is the assistant head coach for the Minnesota Vikings of the National Football League (NFL). He was the head coach of the Cleveland Browns from 2014 to 2015, and has also served as the defensive coordinator for the Buffalo Bills, New York Jets, and Green Bay Packers.
The flat in gridiron football is the area of the field extending ten yards into the defensive backfield from the line of scrimmage and extending outside the hash marks to the out-of-bounds lines.
Trent Jordan Watt is an American football linebacker for the Pittsburgh Steelers of the National Football League (NFL). He played college football for the Wisconsin Badgers before being selected by the Steelers in the first round of the 2017 NFL draft.