The Quarterback's Job in a Football Game
With the exception of kicking plays, quarterbacks touch the ball on every offensive play during a football game. A quarterback’s job is to direct his team toward the end zone and score as many points as possible. The typical team scores on one-third of its offensive possessions, resulting in either a touchdown or a field goal. So you can see that the quarterback is under enormous pressure to generate points every time the offense takes the field.
The quarterback (QB) is the player directly behind the center receiving the ball (see this figure).
The quarterback is the player who announces the plays in the huddle, but he doesn’t call them on his own. Coaches on all levels of football (peewee, high school, college, and the NFL) decide what plays the offense will use. But the quarterback must be prepared to change the play at the line of scrimmage if it doesn’t appear that the play will succeed. Changing the play at the line of scrimmage in this way is called audibilizing.
After the quarterback is in possession of the ball, he turns and, depending on which play was called, takes one of the following actions:
Hands the ball to a running back.
Runs with the ball himself.
Moves f urther back and sets up to attempt a pass. Depending on the design of the offense, the quarterback takes a three-step, five-step, or seven-step drop before throwing the ball.
The area in which the quarterback operates, most likely with a running back and the offensive line protecting him from the defense, is called the pocket. It’s as wide as the positioning of the quarterback’s offensive tackles.
The quarterback’s main job is to throw the football and encourage his teammates to play well. In college, especially if the team runs a spread formation, the quarterback may run the ball as often as he passes, but in the NFL, the quarterback rarely runs with the ball.
Here are a couple of special-case plays the quarterback may need to call:
Quarterback sneak: Teams run this play when the offense needs a yard or less for a first down. The quarterback takes a direct snap from the center and either leaps behind his center or guard, or dives between his guard and center, hoping to gain a first down.
Shotgun snap: In passing situations when the team has many yards to go for a first down or touchdown, quarterbacks sometimes take a shotgun snap: the quarterback stands 6 to 8 yards behind the center and receives the ball through the air from the center, much like a punter does. Starting from the shotgun position, the quarterback doesn’t have to drop back. He can survey the defense and target his receivers better. However, defending against a quarterback who lines up in the shotgun position is easier for the defensive players, because they know the play is very likely to be a pass instead of a run.

Football Glossary
ACC
The Atlantic Coast Conference of college football teams.

Football Glossary
AFC
An acronym for the American Football Conference.

Football Glossary
AFL
An acronym for the American Football League.

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BCS
An acronym for the Bowl Championship Series.

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Big Ten
A college athletic conference whose eleven-member institutions are located mainly in the Midwestern United States.

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bye week
A week during which an NFL team doesn’t play; every NFL team has one week of the season off.

Football Glossary
center
The player who snaps the ball to the quarterback. A center handles the ball on every play.

Football Glossary
DEF
An acronym for Team Defense.

Football Glossary
fullback
A player who’s responsible for blocking for the running back and also for pass-blocking to protect the quarterback. Fullbacks, who are generally bigger than running backs, are short-yardage runners.

Football Glossary
kicker; placekicker
The member of the special team who is responsible for field goal and extra point attempts.

Football Glossary
NCAA
An acronym for the National Collegiate Athletic Association.

Football Glossary
NFC
An acronym for the National Football Conference.

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NFL
An acronym for the National Football League.

Football Glossary
Pac-10
The Pacific-10 Conference is a college athletic conference that operates in the western United States.

Football Glossary
Punt
A kick to the opponent without the use of a tee.

Football Glossary
quarterback
The leader of the team. The quarterback calls the plays in the huddle, yells the signals at the line of scrimmage, and then receives the ball from the center. Then he hands off the ball to a running back, throws it to a receiver, or runs with it.

Football Glossary
running back; tailback; halfback; wingback
A player who runs with the football.

Football Glossary
SEC
The Southeastern Conference of college football teams.

Football Glossary
snake draft
A draft in which each fantasy coach has one pick in each round. Each team makes its first-round pick based on a predetermined order.

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ST
An acronym for Special Teams.

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stud
A top-rated fantasy football starter.

Football Glossary
tight end
A player who serves as a receiver and also as a blocker. The tight end lines up beside the offensive tackle to the right or the left of the quarterback.

Football Glossary
waivers
A situation where a player is dropped from a team roster; the player goes on waivers for a limited time before becoming a free agent. All coaches then have a set amount of time (usually two days) to decide whether to add him to their teams.

Football Glossary
wide receiver
A player who uses his speed to elude defenders and catch the football. Teams use as many as two to four wide receivers on every play.