How LBW Works in Cricket: Simple Rule Explanation

Here is how LBW works in cricket explained in one sentence: a batter is out leg before wicket when a legal delivery hits some part of them before it hits the bat, and the ball both came from a permitted place and was going on to knock the stumps over. Five separate conditions have to be satisfied at once. Fail any one of them and the answer is not out, however loud the appeal from the Hollies Stand or the Western Terrace. That is the whole law, and everything that follows is simply the order in which an umpire checks those five things and the way the big screen shows you the same checks in colour.

Leg before wicket exists for a reason that is easy to state. If a batter could stand in front of their stumps and let the ball thump into their front pad without penalty, nobody would ever need to play a shot and bowling would be a waste of a run-up. LBW makes the pads answerable. The complications all come from the law's attempt to punish that without punishing a batter who is honestly trying to hit the ball.

The five conditions, all of which must be true

An umpire is not weighing up an overall impression. They are running a checklist, and the appeal fails at the first item that does not hold.

#	The condition	It fails if
1	The delivery was legal	The bowler overstepped or bowled a no ball for any reason
2	The ball hit the batter before it hit the bat	There was an inside edge, however faint, onto pad
3	The ball did not pitch outside leg stump	It landed on the leg side of leg stump
4	The point of impact was in line with the stumps	It struck outside off — unless no genuine shot was offered
5	The ball would have gone on to hit the wicket	The projection shows it missing, or going over the top

Two footnotes that catch out newcomers. The dismissal is called leg before wicket, but the leg is not the point: the ball may strike the chest, the glove that has come off the bat handle, the shoulder or the helmet and it is still LBW, provided the five conditions hold. And the umpire cannot give it unless the fielding side appeals. No shout, no wicket, even if every condition is met.

Condition one and two: a legal ball, and pad before bat

The first thing checked is the least interesting and the most decisive. A no ball cannot produce an LBW. If the bowler's front foot has landed with no part of it behind the popping crease, the delivery is dead as a wicket-taking ball for this purpose, and the third umpire in a televised match will check the front foot before anything else is examined.

Second, the ball must strike the batter first. Any contact with the bat, or with the hand holding it, kills the appeal outright. That is why a fine edge onto the pad is the great LBW escape, and why the snickometer trace and the stump microphone matter so much in a review. A ball that hits pad and then bat is still live for LBW; a ball that hits bat and then pad is not. The sequence is everything, and at full speed the human ear in the middle simply cannot always separate the two sounds.

Condition three: where the ball pitched

Draw a line from leg stump at the bowler's end to leg stump at the batter's end. If the ball lands on the leg side of that corridor, the batter cannot be out LBW, full stop, whatever happens afterwards. It does not matter that the ball then spun a yard and would have hit middle stump halfway up.

The reasoning is about a fair chance to play. A ball landing outside leg attacks from an angle where the batter's own body is unavoidably between bat and ball, and the law declines to punish them for a geometry they cannot escape. It is the single most generous clause in the law and the reason left-arm spinners bowling round the wicket to a right-hander go so long without an LBW.

A ball that pitches in line, or outside off stump, or does not pitch at all — a full toss — passes this test. Full tosses are worth understanding, because a low full toss that raps the pad in front is a live LBW every time and batters routinely look surprised when it is given.

Condition four: impact, and the no-shot trap

Impact means the point on the batter's body where the ball first made contact, and where that point sits relative to the same wicket-to-wicket corridor.

If the impact is in line with the stumps, the appeal survives. If the impact is outside the line of off stump, there is a fork in the road:

• The batter played a genuine shot at the ball: not out. They were trying to hit it, they missed, and the law does not punish an honest attempt made outside the line.
• The batter offered no shot — bat tucked behind the pad, body thrust forward, the classic leave: they can still be out, provided the ball was going on to hit.

That second clause is the one that decides Test matches in England. On a green morning at Trent Bridge or Headingley, the received wisdom is to leave anything you are not certain about outside off. A ball that then swings or nips back late, strikes the front pad outside off with the bat nowhere near it, and is shown to be clipping off stump is out, and the batter has no complaint. It is the punishment for treating the leave as a free option.

An umpire judging "genuine attempt" is judging intent, which is why it is one of the few genuinely subjective elements left in the law. Since 2021 a fielding captain may ask the umpire whether a shot was deemed to have been offered before deciding whether to spend a review — the answer changes whether a review is worth burning.

Condition five: would it have hit the stumps

This is the projection, and it is the only part of the law that asks anyone to predict rather than observe. The umpire has to decide whether the ball, had the batter not been in the way, would have gone on to hit the wicket — the three stumps and the bails.

Three things push a decision towards not out here:

• Height. A ball striking the pad above the knee roll on the front foot, especially from a bowler of any pace, is usually climbing over the bails by the time it reaches them.
• Distance down the pitch. The further from the stumps the impact, the longer the prediction and the less anybody can be sure. This is the reason umpires have historically been reluctant to give a batter out on the front foot when they are a long stride down the wicket.
• Movement. A ball still swinging or turning at the moment of impact may keep moving and slide past the outside of off or the outside of leg.

Turn those three round and you have the recipe for the LBW that gets given every time: struck low, struck close to the stumps, hitting a batter who is playing back, from a ball that has finished doing whatever it was going to do.

The umpire's decision tree, in the order it actually runs

The umpire in the white coat has roughly a second and a half. The order matters because the checks are not independent — each one can end the process.

1. Was it a no ball? If yes, stop. Signal no ball.
2. Did the ball hit the bat first? If yes, stop. Not out.
3. Where did it pitch? Outside leg, stop. Not out. In line or outside off, continue.
4. Where was the impact? Outside off with a shot offered, stop. Not out. In line, or outside off with no shot, continue.
5. Was it hitting? Judge height and line. Missing, not out. Hitting, raise the finger.

Watch an umpire closely from the Compton Stand at Lord's and you can see the tree run. The head drops to the front foot on delivery, comes up to track the pitch of the ball, follows it to the pad, and only then does the decision arrive. Umpires who look slow are usually just working through the list in the right order.

How DRS ball-tracking shows the same checks

The Decision Review System does not use a different law. It runs the same tree with cameras, and it puts three of the steps on the big screen at Edgbaston or Old Trafford in a fixed sequence, each with its own verdict.

Graphic	What it reports	Possible readings
Pitching	Where the ball actually landed	In line, outside off, outside leg
Impact	Where it first struck the batter	In line, outside off, umpire's call
Wickets	The projected path onto the stumps	Hitting, missing, umpire's call

Pitching is a measurement of something that has already happened, so it is reported as fact — there is no margin of doubt about where a ball landed. Impact and Wickets both involve tolerances, which is why umpire's call can appear on either.

The review itself is a fixed procedure. The batter, or the fielding captain, signals a T within fifteen seconds of the decision. Each side has two unsuccessful reviews per innings in each format. Since 2017 there is no replenishment part-way through a Test innings, and a review that comes back as umpire's call is not deducted, so a side can lose a marginal one and still hold its two.

Umpire's call, the wicket zone and the usual misreadings

Umpire's call is the most argued-about phrase in cricket and the most misunderstood. It is not a fudge. It is the system admitting, in public, that its prediction has an error margin.

Ball-tracking measures the delivery accurately up to the moment of impact and then extrapolates. For the Wickets graphic, the software checks the projected ball against the wicket zone — the box bounded by the outside edges of off and leg stump and running up to the top of the stumps including the bails, a height that was raised from the bottom of the bails in 2021.

• More than half the ball inside that zone: hitting. The on-field decision can be overturned either way.
• No part of the ball in the zone: missing. Again, a clear overturn.
• The ball clipping the zone with less than half of it inside: umpire's call. Whatever the umpire said in the middle stands.

The practical consequence is the thing that infuriates fans and is nevertheless correct: two identical-looking deliveries can produce opposite results because one umpire raised a finger and the other did not. Umpire's call is not a verdict on the delivery. It is a verdict on the technology's confidence, and where the technology is not confident, the human decision is left alone.

Note also that DRS is a competition regulation, not part of the Laws of Cricket. It requires the full camera and audio rig, which is why you will see it in televised internationals at the Kia Oval and not in a County Championship round at Chelmsford or Taunton, where the umpire's decision is final and that is the end of it.

Six things people get wrong about LBW

• "It has to hit the leg." No. Any part of the person will do, as long as the ball did not hit the bat first.
• "You can't be out on the front foot." You can, and frequently are. Playing forward reduces the certainty of the projection; it does not confer immunity.
• "A ball pitching outside off can't be LBW." Pitching outside off is entirely fine. It is pitching outside leg that saves you.
• "If it's going over the stumps by a fraction, it's out." The projected ball has to be hitting the wicket zone. Clipping the very top gives umpire's call, which means the on-field decision survives.
• "Padding up is safe." Offering no shot removes the outside-off protection completely. It is the riskiest thing a batter can do outside off stump in English conditions.
• "Umpire's call means the umpire got it wrong." It means the technology cannot prove the umpire wrong. Those are different statements.

LBW in English conditions: why so many are given here

England produces more LBWs than most places, and the reasons are physical rather than legal.

The Dukes ball holds its seam proud for longer than the alternatives, which keeps deliveries deviating deep into an innings. A pronounced seam plus a cloudy afternoon in Leeds or Manchester means the ball is still moving when it reaches the pad, and late movement is what turns a leave into a dismissal. The swing bowling tradition that grew out of those conditions is built around the ball that starts outside off and comes back, and its natural dismissal is LBW rather than a nick to slip.

Pitches matter too. Early-season county surfaces in April are slow and low, and low bounce is the LBW bowler's ally, because a ball that keeps down cannot be dismissed as going over the top. Our guide to pitch conditions through the season explains why an April pitch at Derby and an August one at the Kia Oval behave nothing alike. Spin, when it finally arrives in late summer, brings its own version — the ball that goes straight on and hits a batter playing for turn, described in more detail in the spin bowling challenge guide.

Frequently asked questions

Can you be out LBW if the ball pitches outside leg stump?

No, never, under any circumstances. The ball landing on the leg side of the line of leg stump is an absolute bar to the dismissal, regardless of how much it turned afterwards or how plumb it looked.

Can you be given LBW if you don't play a shot?

Yes, and this is the important exception. If the impact is outside the line of off stump you are only protected when you have made a genuine attempt to play the ball. Shoulder arms and get hit in front, and if the projection says hitting, you are out.

What is umpire's call in LBW decisions?

It is the outcome when ball-tracking shows less than half the ball striking the wicket zone, or a marginal impact point. The original on-field decision stands and the fielding side keeps its review. It is the system's way of saying its prediction is not precise enough to overrule a human.

Why is it umpire's call when the ball is clearly hitting the stumps?

Because "clearly" on a television replay and "clearly" to the software are different tests. The software requires more than fifty per cent of the ball inside the zone bounded by the outside of the stumps and the top of the bails. A ball shaving leg stump does not meet it.

How many DRS reviews does each team get?

Two unsuccessful reviews per innings per side. Umpire's call outcomes do not cost a review, and in Test cricket there is no top-up after eighty overs — that was removed in 2017.

Is DRS used in county cricket in England?

Not in the ordinary County Championship programme, which has no ball-tracking rig. You will find the full system at England internationals and at the grounds where a broadcaster is present. Elsewhere the on-field umpire's decision is the decision, which is exactly how it works in the club game too.

Can you be out LBW off a full toss?

Yes. A ball that does not pitch at all cannot fail the pitching test, so a low full toss striking the pad in line and going on to hit is out. Only the height check saves the batter, and above waist height the delivery is a no ball anyway.

Where can I see LBW decisions being made properly?

Any Test day. The Lord's Test against Pakistan has DRS, replay screens and Test Match Special explaining every review, and the match day guide to Lord's covers getting there. If you would rather learn the rest of the game at the same time, the laws every fan should know sets LBW alongside no balls and wides, how to read a scorecard shows how the dismissal is recorded, and the companion pieces on fielding positions and rain-affected targets fill in the other two things newcomers always ask about. Everything else sits in the England cricket section and the wider guide to cricket in England.