NFL Intentional Grounding: The Rule and the Penalty
How the NFL intentional grounding rule works, from the pressure and receiver tests to the 10-yard penalty, the pocket exception, spikes and safeties.
By CricketTaken EditorialPublished Updated NFL Rules25 min read
- Yardage penalty
- 10 yards and loss of down
- Rulebook citation
- Rule 8, Section 2
- Grounding from the end zone
- Safety, 2 points
- Runoff after the two-minute warning
- 10 seconds
A quarterback about to be buried for a nine-yard loss slings the ball into the turf, five yards from the nearest teammate. The referee's flag is out before the pass rusher has gotten up. Under Rule 8, Section 2 of the National Football League's playing rules, that throw costs the offense the down and 10 yards from the previous spot, a price set deliberately so that it is never cheaper than the sack it was meant to dodge.
Intentional grounding in the NFL takes two things together. The passer has to be facing an imminent loss of yardage because of pressure from the defense, and he has to throw a forward pass that is not in the direction and vicinity of an originally eligible receiver. Remove either half and there is no foul. A quarterback who has been outside the pocket may legally throw the ball away if it lands at or beyond the line of scrimmage, a quarterback under center may spike it at once to stop the clock, and a grounding foul thrown from inside the passer's own end zone is a safety.
The two tests behind the NFL intentional grounding rule
The rulebook's definition is one sentence long. It is a foul for intentional grounding "if a passer, facing an imminent loss of yardage because of pressure from the defense, throws a forward pass that is not in the direction and vicinity of an originally eligible offensive receiver." A second sentence closes a loophole: the pass does not have to be incomplete.
Read it as two tests that must both be failed. The first concerns the passer's situation. A quarterback standing in a clean pocket who sees nobody open and fires the ball ten rows deep has committed no foul, because nothing was about to cost him yards. The second concerns the ball. A pass can be ugly, uncatchable and thrown in something close to panic and still be legal if a running back is standing where it lands.
The name misleads people. Nobody on the crew reads the quarterback's mind, and the word "intentional" does almost no work in the modern rule. Officials judge proxies for intent, which is why the same throw can draw a flag one week and nothing the next: "imminent" and "vicinity" are judgments made at full speed from twenty yards away.
Two details of the wording come up often. "Passer" is not a synonym for quarterback; a running back on a halfback option or a punter on a fake is held to the same rule the moment he throws forward. And the foul covers only forward passes thrown from behind the line of scrimmage. A pass from beyond the line is a different foul, covered in our guide to what makes a forward pass legal, and a ball tossed backward cannot be grounded at all. It is a live ball.
- PressureWas the passer facing an imminent loss of yardage because of the rush? If not, there is no foul.
- PocketHad the passer or the ball been outside the pocket area? If so, the pass only has to land at or beyond the line of scrimmage.
- ReceiverDid the ball go in the direction and vicinity of an originally eligible receiver? If so, the throw is legal however bad it was.
- ContactWas the passer hit after his throwing motion began, and did the hit send the ball astray? If so, the foul is waved off.
The order in which the tests in Rule 8, Section 2 are usually worked through. An answer in the passer's favor at any step ends the inquiry without a foul.
What officials treat as pressure
The rule does not say "about to be sacked." A free rusher two steps away qualifies. So does a defender with a hand on the jersey, or an interior lineman who has collapsed the pocket into the quarterback's lap. What generally does not qualify is the timing throw gone wrong: the ball comes out on the third step of the drop, the receiver has been jammed off his route, and it bounces in an empty patch of grass. No rusher was close. Bad football, legal pass.
How the penalty is marked off: 10 yards or the spot of the pass
Grounding carries two punishments at once, a loss of down and a loss of yardage, and the yardage comes in two forms. The standard version is 10 yards from the previous spot, the place the ball was snapped. The alternative is the spot of the pass with no extra yards added, and it applies whenever that spot is the harsher of the two: when the quarterback threw from more than 10 yards behind the line, or from more than half the distance to his own goal line.
Set the sack beside it and the logic is plain. A quarterback dropping back from his own 40 who is caught at the 31 loses nine yards. If he grounds the ball from the 31, the offense goes back to the 30 and the down is gone anyway. Had he retreated to the 25 before throwing it away, 10 yards from the previous spot would be a discount on the sack, so the rule switches to the spot of the pass and leaves him at the 25.
Loss of down means the down is used up. Second-and-8 at the 40 becomes third-and-18 at the 30. There is no replay, which is what separates grounding from most offensive fouls: holding costs 10 yards and the offense tries again, grounding costs 10 yards and the try is spent.
| Where the passer threw from | How it is enforced | Example starting at second-and-8 |
|---|---|---|
| 10 yards or fewer behind the previous spot | Loss of down and 10 yards from the previous spot | Snap at own 40, throw from the 33: third-and-18 at the 30 |
| More than 10 yards behind the previous spot | Loss of down at the spot of the pass | Snap at own 40, throw from the 26: third-and-22 at the 26 |
| Near his goal line, within half the distance | Loss of down and half the distance from the previous spot | Snap at own 12, throw from the 9: third down at the 6 |
| Near his goal line, beyond half the distance | Loss of down at the spot of the pass | Snap at own 12, throw from the 4: third down at the 4 |
| Entire body and the ball in his own end zone | Safety | Two points to the defense, then a free kick |
On fourth down the arithmetic barely matters. The yardage is walked off, the down is lost, and the ball belongs to the defense where the enforcement ends.
The defense is free to decline, and sometimes must. A grounded ball that floats to a linebacker is an interception, and no defensive coach takes 10 yards in place of the football.
Outside the pocket, the throw only has to reach the line
Here is the exception that swallowed much of the rule. Intentional grounding is not called when a passer "who is outside, or has been outside, the pocket area" throws a forward pass that lands at or beyond the line of scrimmage. No receiver has to be anywhere near it. The ball can land in the bench area or in the fourth row.
The pocket area has its own definition in Rule 3: the area between the outside edges of the normal tackle positions on each side of the center, running back to the offense's own end line. Broadcasters still call it the tackle box, the older term and still the college one. A player holding the ball is out of it the moment any part of his body or the ball is outside that strip. One foot is enough.
Two phrases do a lot of quiet work.
"Has been outside" means the status does not expire. A quarterback who rolls right past where his tackle lined up, finds the edge sealed off and drifts back toward the middle is still treated as outside the pocket when he finally throws.
"Normal tackle positions" means the landmark is where the tackles set up at the snap. It does not travel with them. A left tackle who kick-slides eight yards deep and four yards wide has not widened the pocket, and a tight end lined up outside the tackle does not extend it. The officials are picturing two stripes painted on the grass at the snap.
The ball has to get there
Leaving the pocket earns only half the exception. The pass must land at or beyond the line of scrimmage, measured against the line "extended" past the sideline. A throwaway that sails out of bounds is judged by where it comes down. Short of the line with no receiver near it, in bounds or out, and the flag stands.
This is the part quarterbacks get wrong under duress. Running toward the sideline with a defender on the hip, the natural motion is a flick out of bounds, and a flick thrown across the body from 12 yards deep often lacks the distance.
A loose ball gets its own sentence in the rule. If a snap is muffed and rolls out of the pocket area, the pocket ceases to exist, and whoever picks the ball up may throw it away past the line.
One wrinkle remains. A passer outside the pocket who throws short of the line is still protected by the ordinary test, so a ball at the feet of a back in the flat is legal. The line-of-scrimmage requirement applies to the pure throwaway, the one aimed at nobody.
What "direction and vicinity" means on screens, broken routes and caught balls
Both words count. A pass thrown toward a receiver that lands thirty yards short of him fails on vicinity. In practice crews fold the two into one question: was there an eligible player in the area the ball was thrown to. The rulebook puts no yardage on "vicinity," and it would be a mistake to invent one.
The screen that dies at a back's feet
The most common legal throw that looks like grounding is the screen pass under heat. A defensive end reads the play and stays home, the back is covered, and the quarterback fires the ball into the ground at the back's shoelaces. It is deliberate, nobody could catch it, and it is legal, because the ball went in the direction and vicinity of an eligible receiver. Whether he could have caught it is not the question the current definition asks. Our explainer on how a screen pass is built shows why the back is usually close enough for this to work.
The same reasoning protects the sideline throwaway from inside the pocket: six feet over the head of a receiver running an out route, into the bench. A receiver was there. The pass went his way.
Broken routes
Now the harder one. The quarterback throws to the spot where a receiver is supposed to break, and the receiver, reading the coverage differently, breaks the other way. The ball lands fifteen yards from anybody. If there was real pressure, both halves of the rule are technically satisfied.
Crews are slow to flag this. The foul exists to stop a passer from dumping the ball, and a throw to where a teammate was meant to be is an attempt to complete a pass. Officials look for the marks of a timing throw: the ball out on rhythm, a receiver heading toward that area until the break. The messy truth is that this is a judgment about what the quarterback was trying to do, inside a rule that otherwise tries hard not to ask.
When the grounded pass is caught
A quarterback in a defender's grasp shovels the ball forward to the nearest body, and the nearest body is his right guard. The guard catches it. That is still grounding, because a guard is not an originally eligible receiver, and it is usually illegal touching of a forward pass as well.
A ball that strikes a lineman in the back on its way to a tight end is different. Direction is judged by where the pass was going.
Covered receivers count. Nothing in the rule requires the target to be open, or even looking.
Why a spike is legal and a delayed spike is intentional grounding
A spike is a forward pass thrown at the ground on purpose with no receiver in mind. The rulebook carves it out by name and draws the carve-out narrowly: a T-formation quarterback may stop the game clock legally "if, immediately upon receiving the snap, he begins a continuous throwing motion and throws the ball directly into the ground." Each piece of that is a condition.
T-formation quarterback is a defined term, a player aligned one yard or less behind the snapper. Under center, in plain words. A quarterback standing in the shotgun or the pistol is not one, so a spike from the gun is a foul. Offenses that live in the shotgun still walk the quarterback up under center for the clock play for exactly this reason.
"Immediately" and "continuous" rule out anything that looks like a decision. A quarterback who takes the snap, glances at the coverage and then spikes it has delayed, and a separate item deals with him: a passer who delays his passing action for strategic purposes may not throw the ball to the ground in front of him, "even if he is under no pressure." It is the one place in the grounding rule where the pressure test is switched off.
| Clock play | Ruling under NFL rules |
|---|---|
| Under center, immediate spike at his feet | Legal incomplete pass; the clock stops and the down is used |
| Shotgun or pistol snap, immediate spike | Intentional grounding |
| Under center, pause to read the defense, then spike | Intentional grounding as a delayed spike |
| Fake spike, then a pass thrown to a receiver | Legal; it is an ordinary forward pass |
| Under center, drops back under a rush, then throws it into the turf | Intentional grounding under the general rule |
The fake spike is a pass like any other
Nothing prohibits pretending. On November 27, 1994, at Giants Stadium, Dan Marino brought the Miami Dolphins to the line against the New York Jets in the final half-minute, signaling a spike. He took the snap, mimed the downward throw, and lobbed a touchdown pass to Mark Ingram instead. Miami won 28-24. The delayed-spike item bars a late throw into the ground. It says nothing about a late throw to a wide receiver.
What the spike costs
The legal spike is an incomplete pass, so it uses a down. An offense that spikes on third down is choosing between a field goal try and a fourth-down gamble, and a spike on fourth down hands the ball over. An illegal spike late in a half is about the costliest version of this foul, since the yardage and the lost down arrive together with the clock runoff described below.
Grounding from the end zone: the safety and Super Bowl XLVI
February 5, 2012, Lucas Oil Stadium in Indianapolis. The New York Giants' opening drive of Super Bowl XLVI ended with a punt that pinned the New England Patriots at their own 6-yard line. On New England's first snap Tom Brady dropped straight back into his end zone, felt Justin Tuck closing on him, and threw the ball long down the middle of the field. No Patriot was near where it landed. Intentional grounding, thrown from the end zone: safety. Giants 2, Patriots 0, the first points of a game New York won 21-17.
It remains the cleanest worked example of the rule. Brady was in the pocket and had never left it. Tuck's rush made a loss imminent. The ball traveled a long way, which fools people into thinking it cannot be grounding, but distance is irrelevant from inside the pocket. What matters is whether a receiver was in the vicinity, and none was.
- 2Points awarded to the Giants
- 6Yard line where New England's drive began
- 20Yard line of the free kick after a safety
- 4Final margin of the game in points
From the official record of the game played February 5, 2012, and the NFL's safety rules. The free kick after any safety is taken from the 20-yard line of the team that conceded it.
The whole-body-and-ball test
The penalty section now says grounding is a safety "if the passer's entire body and the ball are in his end zone when the ball is thrown." That wording dates from the 2023 rulebook. Before it, the text said only that it was a safety if the passer was in his end zone, which left open what to do with a quarterback straddling the goal line.
The current language answers in the offense's favor. A passer with one foot on the 1-yard line is not entirely in the end zone. If he grounds the ball from there, the foul is enforced as yardage, which near the goal line means the spot of the pass or half the distance, with the down lost. It is an odd place for the rule to be generous. A quarterback sacked while holding the ball over his own goal line has given up a safety wherever his feet are, because that ruling follows the ball. How the grounding clause's edge cases are enforced is thinly documented in the rulebook itself.
What follows
Two points, and then the part that hurts more: a free kick from the 20, so the defense that just scored also gets the ball back. The mechanics are in our guide to how a safety is scored and what follows.
For a quarterback standing in his own end zone, then, the choices are bleak. Take the sack and it is a safety. Ground the ball from the pocket and it is a safety. The exits are a throw near someone eligible or an escape from the pocket followed by a ball that reaches the line.
Hit while throwing: contact after the motion starts and contact before it
Sometimes the ball lands nowhere because a 280-pound man hit the passer's arm. The rule accounts for that, and the dividing line is the start of the throwing motion.
Contact after the motion begins excuses the throw. If the passer has started his passing motion toward an eligible receiver and is then "significantly affected by physical contact from a defensive player" that sends the ball away from any receiver, grounding should not be called. A quarterback whose elbow is hit as his arm comes through, sending the ball fluttering sideways into open grass, has thrown a legal incompletion.
Contact before the motion begins excuses nothing. The rulebook is blunt: when a passer is contacted before beginning his throwing motion, "the direction of the pass is the responsibility of the passer." This is the quarterback already wrapped around the waist, spinning, who pushes the ball out with one hand toward nobody. He was hit first. He chose to throw second. Flag.
A parallel clause covers the throwaway. If the passer is out of the pocket and contact causes the ball to land short of the line of scrimmage, there is no foul.
Why this one is hard to officiate
Everything turns on sequence, and the sequence takes about a quarter of a second. The referee has to decide whether the hand had started forward before the hit landed, a question that also governs whether a ball knocked loose is an incomplete pass or a fumble. That neighboring ruling has a long and bitter history of its own, told in our guide to the tuck rule and why it was abolished.
"Significantly" matters too. Fingertips brushing the quarterback's hip do not excuse a ball launched into an empty flat. The contact has to be what sent the pass off course, so officials are judging cause as well as timing, from behind the play with bodies in the way.
There is a pattern to how these get called. When the hit is on the throwing arm and the ball comes out wobbling, crews nearly always give the passer the benefit. When he is being dragged down by the legs and the ball comes out on a tight spiral to a vacant area, they nearly always do not. The spiral is the tell.
A late hit changes nothing about the grounding call itself. The standard a pass rusher is held to is set out in our explainer on the roughing the passer rule.
The 10-second runoff after the two-minute warning
Grounding is listed by name in Rule 4, Section 7, headed "Actions That Conserve Time." Once the two-minute warning of either half has passed, a team may not save time by committing certain acts, and intentional grounding is the second item on the list.
The reason is arithmetic. A sack keeps the clock running. An incomplete pass stops it. Without a further sanction, a quarterback out of timeouts could turn a running clock into a stopped one by grounding the ball, paying 10 yards for something worth far more with eight seconds left. So the rule takes the time back.
- FlagThe yardage and the loss of down are enforced as usual.
- Defense's optionThe defense may take the yardage and decline the runoff, or decline the penalty altogether, in which case the runoff goes with it.
- Offense's optionWith a timeout left, the offense may spend one in place of the runoff. The clock then starts on the next snap.
- RunoffOtherwise officials take 10 seconds off the game clock and set the play clock to 30.
- RestartThe game clock starts on the referee's ready-for-play signal. If 10 seconds or fewer were left, the half is over.
The sequence in Rule 4, Section 7 for a foul by the offense with the game clock running. There is never a runoff against the defense.
The timeout is the offense's only escape, and one of the stronger arguments for hoarding one into the final minute. It is insurance against a panicked throw as well as a way to stop the clock.
The defense's option is occasionally the more interesting one. A team ahead has no reason to decline the runoff. A defense that is behind, and has just forced a grounding foul against an offense trying to run out a half, may prefer the yardage with the seconds left on the clock.
A worked example
Third-and-10 at the opponent's 32, 14 seconds left, the offense trailing by two and out of timeouts. The quarterback is flushed, cannot get outside the pocket and throws the ball into the ground. Ten yards from the previous spot puts the ball at the 42. The down is lost, so it is fourth down. Ten seconds come off, leaving four, and the clock starts on the referee's signal. A 49-yard field goal attempt has become a 59-yard attempt that must be snapped in four seconds by a unit still running onto the field.
Had the quarterback taken the sack, the clock would have kept running and the result would have been much the same. That is the point. The rule is built so that grounding is never the smart play.
How the crew decides, and the narrow part replay can correct
Grounding flags tend to arrive late. The ball hits the ground, a second passes, two officials jog toward each other, and only then does the yellow come out. The delay is the system working as designed.
No single official sees the whole foul. The referee sets up in the offensive backfield, behind and to one side of the quarterback, and his eyes stay on the passer through the throw. He knows whether there was pressure, whether the quarterback got outside the pocket and whether he was hit before or after his arm started forward. What he cannot know is where the ball came down and who was standing there.
That belongs to others. The down judge and the line judge, at the two ends of the line of scrimmage, are best placed to say whether a throwaway reached the line. The deep officials know where the receivers were. So the referee asks, and it works in both directions: a flag thrown on instinct is sometimes picked up after a wing official reports that a running back had leaked into the flat right where the ball landed. Crowds hate a picked-up flag. This is one of the better reasons for one.
What replay may and may not touch
A head coach cannot challenge a grounding call. Rule 15 lists "whether a passer intentionally grounded a pass" among the aspects of a play that are not reviewable.
There is one narrow door. The replay assistance provisions in Section 9 of the same rule, widened in stages over recent seasons, let the replay official advise the crew on specific, objective aspects of a play when the video is clear and obvious, and one listed item is a foul called for intentional grounding where the video shows the passer was out of the pocket area. The same section covers the location of the ball or a player in relation to a line or the pocket area, which is how a throwaway that plainly reached the line of scrimmage can be sorted out without a formal review.
Notice the shape of it. Replay can take a grounding flag off the field when an objective fact was missed. It does not weigh in on whether a receiver was near enough, and it adds a grounding foul in only one circumstance: when a ruling of fumble is changed on review to an incomplete pass, and the crew announced before the review that such a change would bring the foul with it. The wider system is covered in our explainer on the NFL's challenge and replay rules.
That balance is probably right. The pocket and the line of scrimmage are facts a camera can settle, and vicinity is not.
How college and high school football punish the same throw
The three American rulebooks agree on what grounding is and disagree on what it costs.
| Point of comparison | NFL | College (NCAA) | High school (NFHS) |
|---|---|---|---|
| Yardage | 10 yards from the previous spot, or the spot of the pass if that is worse | None beyond the spot of the foul | 5 yards from the spot of the foul |
| Loss of down | Yes | Yes | Yes |
| Throwaway area | Outside the pocket area, set by the normal tackle positions | Outside the tackle box, five yards either side of the snapper | Outside the free-blocking zone, four yards either side of the snap |
| Who may use the throwaway exception | Any passer | The player who controls the snap or the backward pass that follows it | The first and only player to possess the ball after the snap |
| Immediate spike from the shotgun | Foul | Legal | Legal for a player lined up directly behind the snapper |
The college rule
Under the NCAA rulebook the penalty is loss of down at the spot of the foul. No yardage is added. A college quarterback who grounds the ball nine yards behind the line has lost nine yards and the down, the same as the sack, where his NFL counterpart would have lost ten. The college rule is content to make grounding equal to the sack. The professional rule insists on at least equal and often worse.
College football also restricts who may throw the ball away. The tackle-box exception belongs only to the player who controls the snap, or the backward pass that results from it. A receiver who takes a lateral on a trick play and finds nobody open cannot run outside the box and heave it out of bounds.
On spikes the college game is more permissive. A passer may throw the ball directly to the ground provided he does it immediately after controlling the ball and the ball has not already touched the ground, so a clean shotgun snap can be spiked. There is a floor on the clock too: the NCAA book treats three seconds as the minimum needed to spike the ball and still run another play.
The high school rule
National Federation rules, which most states use, assess five yards from the spot of the foul and loss of down. For most of the sport's history that code had no throwaway exception at all. That changed in 2022, when the NFHS added one for a passer outside the free-blocking zone whose pass reaches the neutral zone, a change tied to the welfare of passers who were otherwise being told to absorb the hit. A 2023 clarification limited it to the first and only player to possess the ball after the snap.
More of the differences between Saturday and Sunday are in our guide to how college football's rules differ from the NFL's.
Where the rule came from and what the pocket exception did to quarterbacking
The forward pass was legalized in 1906 by a college rules committee that did not trust it. The early rules punished a failed pass harshly, and passers responded the way anyone would: if the play was dead, they got rid of the ball. By most accounts a foul for doing so deliberately entered the college code in 1914, and because the professional game played by college rules until the NFL began writing its own book in 1933, the pros inherited it.
For most of the century that followed, the rule made no allowance for where the passer was standing. A quarterback flushed toward the sideline had the same choices as one trapped in the pocket: find a receiver, run, or go down.
1993
The NFL changed that in 1993, adding the exception for a passer outside the tackles whose throw reaches the line of scrimmage. The argument was quarterback safety. A passer running along the sideline with a defender closing at full speed is about to take one of the more violent hits in the sport, and the old rule gave him every incentive to hold the ball and take it.
It did what it was meant to do, and something larger. The throwaway became a coached skill. "Get outside and throw it away" is taught from a quarterback's first training camp, bootlegs and sprint-outs carry a built-in safety valve, and a mobile quarterback's worst outcome on a broken play improved from a sack to an incompletion.
There was a cost. The rule used to ask one question, whether the passer was dumping the ball. Now officials track at speed whether a foot crossed an invisible stripe where a tackle stood two seconds earlier, and then whether a ball thrown on the run got back to a second line. The exception turned a rule about intent into a rule about geography. Geography is easier to officiate and easier to coach, which is probably why the colleges and, three decades later, the high schools followed. The same preference for lines over motives runs through much of the modern rulebook, as the other rule guides among our American football pages show.
The rule as it stands
The latest rewrites have been tidying. The pocket area got its own definition. The safety clause was tightened to the whole body and the ball. The older phrase about a "realistic chance of completion" dropped out of the main definition in favor of the plain direction-and-vicinity test, and replay assistance was let in at the edges. None of it altered the bargain at the center of the rule, the one a quarterback faces on every dropback that goes wrong: throw it near somebody, get outside and throw it past the line, or take the loss.