Football fans often hear commentators get excited about a sack, but many people don’t fully know what makes this play so special. A sack in football happens when a defensive player tackles the quarterback behind the line of scrimmage while he’s trying to throw a pass. This exciting play can change the momentum of any football game and is one of the most exciting defensive plays to watch.
What is a Sack in Football? The Basic Definition
A sack is a fundamental defensive play in American football that occurs when the quarterback gets tackled behind the line of scrimmage while attempting to pass. The NFL officially defines a sack as any play where the quarterback is brought down behind the line of scrimmage during a passing play, resulting in a loss of yardage for the offensive team.
For a play to count as a sack, several things must happen:
- The quarterback must be attempting a pass
- He must be brought down or tackled behind the line of scrimmage
- The play must results in a loss of yards
- The quarterback cannot have been running by choice
The key difference between a sack and a regular tackle is location. When a defensive player brings down the quarterback at or beyond the line of scrimmage, it’s just a regular tackle. But when the quarterback behind the line gets brought down, that’s when a sack occurs.
Deacon Jones, a legendary defensive end, actually coined the term “sack” in the 1960s. He compared tackling quarterbacks to sacking groceries – you put them in the bag! This colorful comparison stuck, and now every football fan knows what it means to sack the quarterback.
How Sacks Are Recorded
When a defensive player tackles the quarterback behind the line of scrimmage, the official scorekeeper records a sack as both a statistic for the defender and a loss for the offense. If two players bring down the quarterback together, they each get credit for half a sack. The NFL keeps careful track of sack totals because they show how effective pass rushers are at pressuring the passer.
The loss of yards from a sack gets subtracted from the team’s total rushing yards, not passing yards. This might seem strange, but it’s because the quarterback was back to pass when he got hit. College football follows similar rules, though there are some small differences in how they count certain situations.
Read Also: What is Scrimmage in Football: Complete Guide
How Sacks Happen: The Mechanics Behind Getting Sacked

Sacks happen when defensive line players or other defenders break through the offensive line and reach the quarterback before he can throw the ball. There are several common ways a quarterback gets sacked:
Pressure from Pass Rushers
Pass rushers use different techniques to get past blockers and reach the quarterback. Some defenders use speed to run around the edge, while others use power to push through the middle. When these players succeed, they can tackle the quarterback for a loss.
Coverage Sacks
Sometimes a sack happens not because of great rush, but because receivers can’t get open. When the quarterback holds the ball too long looking for someone to throw the ball to, even a slower rush can eventually reach him.
Blitz Situations
Teams sometimes send extra defenders to rush the quarterback, called a blitz. This can disrupt the timing of plays and lead to more sacks. However, it’s also risky because it leaves fewer players in coverage.
When a quarterback is tackled behind the line during these situations, the yardage loss can be significant. A typical sack loses between 5-10 yards, which puts the offensive team in a much harder situation for the next down.
Famous Sack Records and Statistics
The NFL has tracked sack numbers since 1982, and some incredible records have been set. Michael Strahan holds the single-season record with 22.5 sacks in 2001. This amazing achievement shows just how dominant a defensive player can be when everything goes right.
Here’s a table of notable sack records:
Record Type | Player | Sacks | Year |
---|---|---|---|
Single Season | Michael Strahan | 22.5 | 2001 |
Career Leader | Bruce Smith | 200.0 | 1985-2003 |
Single Game | Derrick Thomas | 7.0 | 1990 |
Rookie Season | Jevon Kearse | 14.5 | 1999 |
These records show how difficult it is to consistently get a sack. Even the best pass rushers might only get 15-20 sacks in a great season, which means they’re successful on just a small percentage of rush attempts.
Impact on Games
A well-timed sack can completely change the momentum of a game. When a team faces third down and needs just a few yards, a sack can push them out of field goal range or force a punt. This shift in field position often leads to scoring opportunities for the other team.
Sacks also have psychological effects. When a quarterback keeps getting pressured, he might start making it harder on himself by rushing throws or not stepping up in the pocket. This mental pressure can be just as valuable as the yards lost on the sack itself.
Different Types of Sacks

Not all sacks are the same. Some happen quickly with explosive rush moves, while others develop slowly as coverage breaks down. Here are the main types:
Strip Sacks: These special sacks also cause a fumble. When the defender hits the quarterback and knocks the ball loose, it can lead to a turnover. This makes a sack even more valuable because it gives the defense possession of the ball.
Coverage Sacks: When receivers can’t get open and the quarterback runs out of time, even a slow rush can result in a sack. These plays show how pass coverage and rush work together.
Cleanup Sacks: Sometimes multiple players converge on the quarterback at once. In these cases, whoever makes first contact usually gets credit for a sack, though sometimes the statistic gets split between players.
Why Sacks Matter So Much
A sack is more than just a tackle for loss – it’s a momentum of a game changer that can affect everything that happens next. When a defensive player brings down the quarterback behind the los, several important things happen:
The offensive team loses yards and faces a longer distance for a first down. This makes it much harder to sustain drives and score points. A sack on first or second down puts tremendous pressure on the offense to make big plays on later downs.
Sacks also help the defense by stopping the clock (in certain situations) and giving them time to rest and reorganize. For pass rushers, getting sacks becomes a personal goal that drives them to work harder and develop better techniques.
Preventing Sacks: How Teams Protect Their Quarterback

Smart offensive teams work hard to prevent sacks through several strategies:
- Quick passing: Getting the ball out fast doesn’t give defenders time to reach the quarterback
- Better blocking: The offensive line uses techniques and schemes to slow down rush attempts
- Mobile quarterbacks: Some QBs can escape pressure by moving around in the pocket or scrambling
Teams also study film to identify which defensive players are most dangerous and plan ways to disrupt their rush patterns. Sometimes they’ll use extra blockers or change their formation to give the quarterback more time.
The battle between offense and defense around sacks makes football more exciting. When a great pass rusher faces a strong offensive line, fans get to see some of the best individual battles in sports.
Conclusion
A sack represents one of football’s most exciting defensive plays. From Deacon Jones creating the term to Michael Strahan setting records, sacks have always been a crucial part of the game. When you watch your next game, pay attention to how sacks affect field position and momentum. Notice how quarterbacks react to pressure and how offensive teams adjust their strategy to prevent getting tackled behind the line of scrimmage.
Whether it causes a fumble, creates a turnover, or simply results in a loss of precious yards, every sack tells a story of preparation, execution, and the constant battle between offense and defense that makes football so compelling to watch.
FAQs
What is the difference between a sack and a tackle?
A sack is when a quarterback gets tackled behind the line of scrimmage during a pass attempt, while a regular tackle can happen anywhere to any player.
What happens when a QB is sacked?
The team loses yards, faces a longer distance for first down, and the play clock advances to the next down.
Is a sack good or bad in football?
A sack is excellent for the defense but bad for the offense since it causes yardage loss and momentum shifts.
What does it mean to be sacked in soccer?
In soccer, being “sacked” means a coach or manager gets fired from their position.