Goaltending in basketball, explained properly

The most confusing call in basketball is the one where the referee awards points for a shot that never went in. No net moves. The ball is often heading away from the basket when the whistle blows. Two points, or three, appear on the scoreboard anyway, and the team that just made what looked like a good defensive play inbounds from the baseline as though it had conceded a dunk.

That is the goaltending rule in basketball doing exactly what it was written to do. It is also, along with its close relative basket interference, one of the few rules in the sport that fabricates a score rather than punishing a foul, and that is why getting it wrong is so expensive.

The rule is not complicated once the pieces are separated. The trouble is that two different offences are usually described with one word, that the American and international rulebooks part company at a specific and unusual point, and that the whole thing turns on a question of geometry that happens roughly ten feet above the floor in about a fifth of a second.

Goaltending and basket interference are two offences, not one

Start with the vocabulary, because almost every argument about this rule is really an argument about which of the two things happened.

Goaltending is about a shot in flight. The ball has been released, it is on its way to the basket, and somebody touches it during the part of that journey the rules protect.

Basket interference is about the ball once it has arrived. It sits on the ring, it drops through the cylinder, it is in the net, it is bouncing on the rim while a hand comes down on it. Interference also covers the equipment: grabbing the ring, shaking the backboard, reaching up through the net from underneath.

The NBA rulebook puts both under one heading, Rule 11, and then lists nine things a player may not do without labelling any of them. Read the nine and the split is obvious anyway. Four are about a ball still travelling. Four are about a ball at, on, or in the basket. One is about the equipment.

44%44%11%

• The ball in flight to the basket4
• The ball at, on or in the basket4
• The ring, net and backboard themselves1

The nine numbered items in Rule 11 Section I are not grouped in the rulebook. The grouping here is by what each item protects.

Show the numbers

What the nine NBA prohibitions are written to stop

Item	Value
The ball in flight to the basket	4
The ball at, on or in the basket	4
The ring, net and backboard themselves	1

FIBA is tidier about it. Article 31 gives goaltending its own two clauses, one for a field goal and one for a free throw, and then lists six separate ways interference can occur. The penalty at the end applies to both, which is why the distinction is often treated as academic. It is not academic. The two offences protect different things, they end at different moments, and the moment at which each one ends is where the American and international games separate.

The three tests a touch has to pass before it can be goaltending

A defender's hand on the ball near the basket is only goaltending if three things are true at the same time. Miss any one of them and the play is legal.

The ball must have a chance to score. The NBA phrases this as a ball with a chance to score or an opportunity to score, depending on which of the nine items applies. A shot that is going to miss everything, a pass that happens to sail near the rim, a ball tipped away by another defender and now travelling sideways: none of these is protected. This is the only genuinely subjective test in the rule and it is where most disputes begin, because a ball rattling high off the back of the ring can look like it has no chance from one angle and every chance from another.

The ball must be above the level of the ring. Below ring level, a defender may do more or less what he likes with a live ball. Anyone who has watched a shot-blocker take the ball cleanly off a layup at chest height has seen this: the block is legal, the ball is free, and nothing that happens afterwards can retroactively make it goaltending. FIBA is explicit that the ball must be completely above the level of the ring before its goaltending clause bites.

The ball must be on its downward flight, or have touched the backboard. A rising shot is not protected. A defender who gets to a shot early enough to catch it on the way up has done nothing wrong, and this is the difference between the block that ends up on a highlight reel and the one that ends up as two free points.

That third test carries an exception large enough to be worth its own section.

The backboard clause, where most arguments start

The moment a shot touches the backboard, the ordinary rules about upward and downward flight stop being reliable.

The NBA states it in two separate items. A player may not touch a ball with a chance to score after it has touched any part of the backboard above ring level, whether the ball is judged to be rising or falling. And a player may not touch a ball with a chance to score after it has touched the backboard below ring level while the ball is on its upward flight.

Read those together and the practical rule is this: if the ball has come off the glass anywhere above the rim, it is protected in both directions until it has finished with the basket. A defender who lets a bank shot hit the board and then swats it off the square has committed goaltending, even though the ball was still climbing when he got to it.

FIBA reaches a similar place by a shorter route. Its clause says goaltending occurs when a player touches the ball while it is completely above the level of the ring and either it is on its downward flight to the basket or it has touched the backboard. No distinction between above and below ring level on the board, but the ball itself has to be completely above the ring when it is touched.

The consequence is the same for the play everyone remembers: the ball comes off the glass, a big man rises and pins it, and the referee awards the basket. It looks like the greatest block of the night and it counts as a made shot.

Basket interference: the cylinder, the ring and the net

Once the ball reaches the basket, the NBA protects a volume of air. The rulebook calls it the imaginary cylinder: a column rising from the ring, into which no player may reach to touch the ball. Item two of the nine covers it in one sentence, and it is the most consequential sentence in the rule.

Four more items complete the picture at the basket. A player may not touch the ball or the ring while the ball is sitting or rolling on the ring using it as a lower base, nor hang on the rim while the ball is passing through. He may not touch the ball at any time with a hand which is through the ring, which is the rule against helping a shot in from underneath. He may not touch the rim, net or ball while the ball is in the net and thereby stop it dropping clear. And he may not vibrate the rim, net or backboard so as to make the ball bounce unnaturally, or bend or move the rim off centre while the ball is on it or passing through.

Then there is the one nobody can ever call correctly at full speed: trapping the ball against the face of the backboard. The rulebook is unusually helpful here and specifies a three-element test. The hand, the ball and the backboard must all be in contact at the same time. A ball batted against the board is not a trapped ball. Anyone who has watched a defender slam a shot into the glass and heard the argument that follows has watched three elements being adjudicated in a tenth of a second.

One exception is written into the very first item and it is easy to miss. If a player near his own basket already has his hand legally in contact with the ball, it is not a violation if that contact continues into the cylinder, or if he touches the ring in the process. A defender who gets clean possession low and follows through upwards is not punished for where his hands finish.

The goaltending rule in basketball, step by step

The referee is running a sequence, whether or not he would describe it that way. Each question narrows the possibilities, and the answer to the sixth one is where the two codes stop agreeing.

1. 1Has the ball been released?Nothing at the rim can be goaltending while the shooter still has hold of the ball. A hand on it at that point is a foul, a held ball or nothing at all.
2. 2Does the shot still have a chance to score?A ball heading well wide, or short, is not protected. This is the only genuinely subjective test in the whole rule, and it is where nearly every disagreement starts.
3. 3Is the ball above the level of the ring?Below ring level nothing here applies. A block taken cleanly at chest height stays legal whatever the ball does next.
4. 4Which way is it travelling?Falling towards the basket, it is protected. Rising, it is not, unless the next question changes the answer.
5. 5Has it touched the backboard?Contact with the board above the rim restores protection in both directions. The NBA also protects a rising ball that has struck the board below ring level.
6. 6Has the ball touched the ring yet?This is the fork. Under FIBA rules the goaltending restrictions end here and the ball is live. Under NBA rules it stays protected inside the cylinder above the ring.
7. 7Is anyone touching the ring, net or backboard?Touching the equipment while the ball rests on the ring, hanging on the rim as the ball drops through, or shaking the board hard enough to alter the bounce, is interference under both codes.
8. 8Who committed the violation?A defender concedes the points the shot was worth, credited as though it had gone in. An attacker concedes the basket and the ball.

The order follows NBA Rule 11. FIBA runs the same first five steps and then diverges at step six, where its protection ends.

What the whistle is worth

The penalty is the reason this rule is treated so seriously by everyone on the floor.

If the violation is committed by a defender, the shooting team is awarded the value of the attempt: two points from inside the arc, three from outside it. The NBA rulebook is explicit that the score is credited and the game restarted exactly as though the ball had gone through the basket, with the single difference that an official hands the ball to the team entitled to the throw-in rather than letting it drop through the net. The defending team then inbounds from the baseline with the usual freedom to run along it.

If the violation is committed by an attacker at the basket he is attacking, no points can be scored and the ball goes to the other team, inbounded at the free-throw line extended on either sideline. FIBA arrives at the same place: no points for an offensive violation, and a throw-in for the opponents from the free-throw line extended unless the rules say otherwise elsewhere.

If both teams violate at once, nobody scores. The NBA restarts with a jump ball between any two opponents at the centre circle, which is one of the very few situations left in the game that produces a centre-circle toss outside the start of a period.

• 1Points awarded on a free throw, FIBA
• 2Points awarded from the two-point area
• 3Points awarded from the three-point area
• 0Points awarded for an offensive violation

Rule-defined values. The one-point case is FIBA's clause for a violation on a free throw; the zero is any violation committed by the attacking team.

The three-point case is worth pausing on. A defender who goaltends a shot released from beyond the arc has conceded three points on a shot that may have been badly missing. That is the single most expensive non-foul in basketball, and it is why teams coach their rim protectors to leave a shot alone rather than risk it, particularly on the sort of desperate long attempt where a block would have made no difference to the outcome anyway.

FIBA stops protecting the ball the moment it touches the ring

Here is the divergence that produces most of the confusion when American viewers watch international basketball.

FIBA writes a hard cut-off into Article 31. The goaltending restrictions apply until one of two things happens: the ball no longer has a possibility of entering the basket, or the ball has touched the ring. Once the ball has hit the rim, the restrictions are over.

There is no cylinder in the FIBA rulebook. The word appears there in an entirely different context, describing the space a player occupies when contact between two bodies is being judged, and nowhere in Article 31 at all. So the column of air above a FIBA rim is not protected. The moment the ball touches the ring, a player from either team may reach into that space and take it: tip it, catch it, pin it, knock it out to a teammate.

What he may not do is touch the equipment. FIBA's interference clauses still forbid touching the basket or backboard while the ball is in contact with the ring, reaching through the basket from below, grabbing the ring and playing the ball, or shaking the basket so that the ball's bounce is altered. A defender playing a ball off the rim internationally is running a genuine risk of a whistle, but the risk is about his hand touching the ring, not about the ball's position in space.

That single clause changes what a big man is worth. The FIBA game rewards a second jump and a fast pair of hands at the rim in a way the NBA does not, and it turns a category of play that Americans read as an automatic two points into an ordinary rebound. The wider set of differences between the FIBA and NBA rulebooks covers the court, the clock and the fouls, but this is the one that changes what happens on the most possessions.

• FIBA
• NBA

Shot touched on its way down, before the ring2pts2pts

Shot pinned above the ring after it has hit the ring0pts2pts

Defender touches the ring while the ball rolls on it2pts2pts

Defender reaches up through the ring from below2pts2pts

Attacker touches his team's shot above the ring, before the ring0pts0pts

Points awarded to the attacking team on a two-point attempt under each rulebook. Zero means no points from that touch. Derived from FIBA Article 31 and NBA Rule 11.

Show the numbers

Five moments at the rim, and what the shooting team gets

Item	FIBA	NBA
Shot touched on its way down, before the ring	2pts	2pts
Shot pinned above the ring after it has hit the ring	0pts	2pts
Defender touches the ring while the ball rolls on it	2pts	2pts
Defender reaches up through the ring from below	2pts	2pts
Attacker touches his team's shot above the ring, before the ring	0pts	0pts

Four of those five rows agree. The one that does not is the one that decides several possessions a night.

Free throws have their own version, and it is stricter

Both codes tighten the rule for a free throw, because a free throw is a slow, unopposed shot with a very predictable arc and would otherwise be trivially easy to interfere with.

FIBA states it plainly: goaltending occurs during a free throw when a player touches the ball while it is in flight to the basket and before it touches the ring. No downward-flight test and no above-the-ring test. Touch it at all before it reaches the rim and it is a violation.

The NBA writes two separate free-throw clauses into Rule 9. No player may touch the ball before it touches the ring or the backboard. And no player may touch the ball or the ring while the ball is using the ring as its lower base, nor touch the ball while it is in the imaginary cylinder above the ring after touching the ring or backboard. Note what the second of those does: on a free throw, the NBA keeps the cylinder protected even after the ball has touched the rim.

The penalties diverge in an interesting way. Under NBA rules, if an opponent violates on a free throw that is to remain in play, the point is scored and an additional free throw is awarded to the same shooter. Under FIBA rules, a defensive violation during a last free throw gives the attacking team one point and is then followed by a technical foul charged against the defender. Two different mechanisms, both designed to make interfering with a free throw a losing proposition rather than a calculated risk.

One quirk of the free-throw rules is shared and almost nobody knows it. A missed last free throw that is tapped into the basket by any player counts as a two-point field goal. The NBA says so in its scoring rule and credits the two points to whoever tapped it in. FIBA reaches the same outcome and its published interpretations work through the case where a defender, trying to bat the ball away after it has come off the ring, accidentally puts it in his own basket: the two points are awarded, credited to the captain of the attacking team on the court. A one-point attempt becomes a two-point score because of what happened after it touched the rim.

Why the rule exists at all

Strip out the clauses and the reasoning underneath is simple, and it runs in two directions.

Without a goaltending rule, a defender tall enough to reach the ring would make shooting from anywhere pointless. He would not need to time a block or contest anything; he would stand under the basket and remove every attempt that arrived, converting the entire offence into a rebounding contest he was already winning. The rule exists to make height and reach valuable without making them decisive. It forces the shot-blocker to do his work while the ball is still rising, which is a timing skill rather than a measurement.

The interference half runs the other way. Without a rule protecting the ball at the basket, an attacker could stand beside the rim and guide his teammates' shots in, or reach up through the net and push the ball through from underneath. That would turn every miss into a tap-in for whoever was tallest. The interference clauses stop the offence from finishing a shot that has already failed.

Both halves are about the same thing. A shot, once released, is supposed to succeed or fail on its own merits. Everything in Rule 11 and Article 31 exists to keep hands out of that resolution, and the differences between the codes are just different judgements about when the resolution is over. The wider argument about how much a shot ought to be worth from where, which reshaped the sport once the arc arrived, is covered in our piece on what the three-point line did to shot selection; the goaltending rule is what makes those shots worth attempting in the first place.

What the goaltending rule in basketball costs the shot-blocker

Every rule redistributes something. This one takes value away from reach and gives it to timing, and the effect on how big men are coached is direct.

A defender who arrives late at a shot has three options and the rule has already priced all of them. He can leave it alone and box out, conceding the attempt but keeping the possession live. He can go up and take it early, before the ball has peaked, which requires reading the release rather than the ball. Or he can go anyway and gamble, which under NBA rules means gambling three points on a shot from the arc against the chance of a block that would have been worth one possession. Coaches who teach the third option are rare for a reason.

The cylinder makes that calculation harsher in the American game. A defender who mistimes a contest in the NBA has a second way to lose: his hand can end up in protected airspace above the rim even after the ball has bounced, so a scramble at the basket carries risk long after the shot itself has failed. That is part of why NBA rim protection is built around meeting the ball out in front, on the way up, at the point of the drive, rather than around waiting under the basket. The schemes that produce those contests, particularly the way help defenders rotate to the rim, are shaped by where the whistle sits as much as by where the shooters are.

The attacking side of the rule is quieter but it bites in two specific places. Putbacks, where a follow-up tip arrives while the original shot is still inside the cylinder, and lobs, where the finisher meets the pass above the ring at the moment the ball is already dropping towards the basket. Both are worth practising precisely because both live a few centimetres from a violation.

Replay can only fix a call that was made

This is the part that surprises people who assume every incorrect goaltending decision gets cleaned up on review.

The NBA allows a coach's challenge to trigger a review of a called goaltending or basket interference violation. That word, called, does the work. If the officials whistled it, a coach may challenge it. If they missed it entirely and play carried on, there is nothing to challenge, because the challenge mechanism reviews decisions rather than events.

The window closes at the end. In the last two minutes of the fourth quarter and the last two minutes of any overtime, a team can no longer use a challenge on a goaltending or interference call, because review in that period is triggered exclusively by the on-court officials. The replay rules give them the trigger directly: officials may go to review when they are not reasonably certain whether a goaltending or basket interference violation was called correctly during those closing minutes.

Two extra checks ride along with the review, and they are unusually specific. If goaltending or basket interference was ruled before the ball touched the rim, the replay official may also determine whether the shooter committed a boundary-line violation, looking only at where the shooter's feet were the last time they touched the floor before or during the release. And he may determine whether an eight-second backcourt violation occurred before the ball left the shooter's hand.

Think about what the first of those does. A defender goaltends a shot from the corner, the officials award three points, and the review finds the shooter's toe was on the line. The award becomes two. The same mechanism can strip the score entirely if the shot came after a violation.

European basketball works to the same shape with its own wording. The EuroLeague's replay appendix allows the referees to review whether a goaltending or basket interference violation occurred, but only after one of them has already made that call, with one exception: where a foul has been called in the act of shooting, they may check the footage for a goaltending or interference violation anyway. The competition also sets out what happens to the shot clock when such a call is overturned and neither team had clear control, which is the sort of detail that only matters twice a season and decides a game when it does. The rest of the EuroLeague's competition structure and its own modifications to the FIBA rules sit in the same document.

The asymmetry is deliberate in every code that uses it. Allowing review of an uncalled goaltending would mean stopping the game to examine every rebound anyone complained about.

The plays that decide it, one by one

Six situations account for almost every real-world argument. Here is what each rulebook actually does with them.

A ball spinning on the rim. Neither code lets a defender touch the ring while the ball is on it. The NBA additionally forbids touching the ball itself. FIBA does not: internationally, a player may pluck a ball off the top of the ring, provided his hand stays off the metal.

A dunk with a hand still on the rim. Hanging on the rim while the ball passes through is on the NBA's list. In practice it is called when the hang alters what the ball does, which is also what FIBA's clause about grasping the basket is aimed at.

A shot that hits the top of the backboard. The board is part of the playing equipment, and a ball that strikes it above ring level is protected in both directions under NBA rules. This is the clause that catches defenders who wait for the ball to come off the glass before attacking it.

A ball wedged between the ring and the backboard. Neither code treats this as interference, because nobody touched anything. It is a jump ball situation. FIBA resolves it with the alternating possession arrow; the NBA sends the ball up in the centre circle.

A whistle while the ball is in the air. FIBA covers this explicitly. Once a referee has blown for a foul while the ball was in the shooter's hands or in flight, or once the game clock signal has sounded for the end of a quarter, no player may touch the ball after it has touched the ring while it still has a chance to enter the basket. All the goaltending and interference restrictions continue to apply. FIBA's own worked examples run through the case where a ball comes off the rim as the horn sounds and is then touched: violation, in every combination of who touched it and whether it went in.

A tip at the end of a quarter. The NBA handles the same moment through its scoring rule instead. If a field goal attempt is in flight when the horn sounds and a defensive player touches it, a successful shot counts. If an offensive player touches it, the period has ended and the shot is dead.

A team's own basket. Both codes contemplate a player interfering at the basket his own team is defending in a way that would score for the opposition. Neither allows points from it. The NBA awards the ball to the offended team at the free-throw line extended.

How to watch for it

The next time a block at the rim produces an argument, three questions will resolve it faster than any replay.

Was the ball still going up? If it was, and it had not touched the backboard, the block is clean under both codes and there is nothing to discuss.

Had it touched the ring? If it had, and you are watching a FIBA competition, the defender can do what he likes to it short of touching the equipment. If you are watching the NBA, ask the third question.

Was his hand inside the column above the rim? In the NBA that column is protected regardless of what the ball has already touched. That is the line that separates a rebound from two points, and it is the one that pundits raised on one rulebook consistently get wrong about the other.

Both governing bodies publish the full text free of charge, and both are shorter than their reputations suggest: Rule 11 runs to nine items and a penalty, and Article 31 to a definition, five short clauses and a penalty. If you want the neighbouring rules that decide what happens after the whistle, the reset rules in our guide to how the shot clock actually works pick up exactly where this one leaves off, and the rest of our basketball rules coverage works through the others one at a time.