Low block football explained: trading territory for space

A team sits with ten players inside their own half, the back four a stride outside the penalty area, and for twenty minutes nothing happens. The ball goes left, comes back, goes right, comes back. The crowd gets restless. A commentator says the away side have no ambition.

What is actually being defended in those twenty minutes is not the scoreline. It is a strip of grass behind the back four that does not exist any more, and the whole arrangement is a trade: you may have the ball and you may have two-thirds of the pitch, and in return you may not have the space where most goals get made. Low block football explained honestly is not a story about cowardice. It is a story about which resource a team has decided to protect and which one it is willing to hand over.

The bus has nothing to do with it.

A low block is a trade, and the thing it buys is the space behind

Start with what a defence is actually defending. Not the goal, which is 7.32 metres wide and 2.44 metres high and never moves. The defence is defending the routes to it, and those routes are not equally dangerous.

The most valuable space in football is the ground behind the last defender. A ball played into it turns a defensive situation into a footrace, and footraces are decided by pace and timing rather than by organisation, which is precisely the kind of contest a well-drilled but slower team wants no part of. A striker running onto a through ball arrives at the goalkeeper with the defence behind him and the whole face of the goal available. Nothing a defence does after that point works reliably.

A high defensive line accepts that risk in order to squeeze the pitch and win the ball back further from its own goal. The trade-offs of that decision, and the offside law that makes it possible at all, are worked through in the piece on defending with a high line. A low block makes the opposite bet. Drop the back line to the edge of your own penalty area and the space behind it stops existing, because there are only sixteen and a half metres between the edge of that area and the goal line, and most of that is occupied by a goalkeeper who no longer has to sprint anywhere to cover it.

That is the entire purchase. Everything else about a low block is the price.

The price is the ball, which you will not have. The price is territory, roughly two-thirds of the pitch, which the opponent may occupy freely. The price is that when you do win the ball you are a very long way from goal with tired legs. And the price is that you will face a lot of shots, a lot of crosses and a lot of corners, because a team camped in your half will generate all three.

The bet is that the chances you concede will be worse. Not fewer. Worse. A shot from twenty metres with three bodies in the way is a different proposition from a one-against-one after a ball over the top, and a defence that converts the second kind of chance into the first kind, several hundred times a season, is doing something valuable even while the possession column looks humiliating. Shot-quality models capture some of that difference and miss the rest of it, because a defender standing in the passing lane changes what the attacker can attempt long before anyone shoots.

The uncomfortable part, and the part nobody says out loud on television, is that this trade is more attractive the worse your players are. A team with faster centre-backs than the opposition's forwards can afford a high line. A team without them cannot, and a coach who plays one anyway is not being brave, he is being arithmetically careless.

The shape: two banks, and the distances that decide everything

A low block is usually described by its formation, and the formation is the least interesting thing about it.

The common arrangements are a flat back four with a flat midfield four in front of it and two forwards ahead of that, or a back five with a midfield three, or a back five with a midfield four and a lone forward. Which one a coach picks depends mostly on how many players he wants on the last line and whether he needs an extra man in central midfield. The back five exists to add a spare defender who can cover across without leaving a full-back isolated. The back four exists because it frees a body for midfield, where the ball actually is.

None of that decides whether the block works. What decides it is three distances.

The distance between the defensive line and the midfield line. This is the one that matters most, and coaches teach it as a band of roughly ten to fifteen metres. That is a convention rather than a rule, and different coaches use different numbers, but the reasoning behind it is exact. A pass played into a receiver between those two lines has to be defended by somebody stepping forward or somebody dropping back, and the gap decides which is possible. At ten metres a midfielder can drop onto the receiver's back before he turns. At twenty-five metres nobody arrives, and the receiver turns with the whole defence in front of him and time to pick a pass.

The distance across the block. A full-size pitch is 68 metres wide in most professional stadiums, and Law 1 permits a range for internationals of 64 to 75 metres. A compact block does not attempt to cover that. It covers something closer to the width of the penalty area, which is 40.32 metres: the goal is 7.32 metres wide and the area extends 16.5 metres either side of it. The block sits over the middle of the pitch and deliberately leaves the touchlines open, on the theory that a player standing on the touchline forty metres from goal is not a threat and can be dealt with when the ball actually goes there.

The distance between players inside a line. Each of the four or five defenders needs to be close enough to his neighbour that a dribbler cannot go between them and a pass cannot be threaded between them, which in practice means covering roughly a quarter to a fifth of the block's width each. Too tight and the whole line can be dragged to one side by a single run. Too wide and there is a gate between every pair.

These distances are the block. Everything else is decoration.

40m wide, 25m deep100m²

50m wide, 35m deep175m²

60m wide, 45m deep270m²

Constructed arithmetic on stated assumptions, not measured data. The block is treated as a rectangle covered by ten outfield players, and the area is simply width times depth divided by ten. Real defending is not uniform and the goalkeeper is excluded, but the ratio between the three cases is the point.

Show the numbers

Worked example: how much ground each outfield player has to cover

Item	Square metres per outfield player
40m wide, 25m deep	100m²
50m wide, 35m deep	175m²
60m wide, 45m deep	270m²

That constructed comparison is the argument for compactness in one line. A block that is fifty per cent wider and eighty per cent deeper does not defend fifty per cent worse. It hands each player nearly three times as much ground, and defending is not linear in area, because a defender who is two metres out of position in a tight block is still within reach of his neighbour and a defender who is two metres out of position in a stretched one has opened a passing lane.

Why compactness beats block height, and why everyone gets this backwards

Commentators talk about block height. Coaches worry about compactness. The distinction is not pedantry and it is the single most useful idea in this whole subject.

Block height is where the deepest line sits. Compactness is the distance between the deepest line and the highest player. They are independent. A team can defend with its back four on the eighteen-yard line and its forwards on the halfway line, which is a low, stretched block and is close to the worst possible arrangement. A team can defend with its back four on the halfway line and its forwards thirty metres ahead of them, which is a high, compact block and is a perfectly coherent one.

The stretched low block is the version that gets teams beaten and it is extremely common, because it is what happens by default. Forwards do not want to run forty metres backwards. They are the players least drilled in defensive shape, they are usually the ones a coach is protecting for the counter, and they are the ones for whom dropping in feels like an admission. So they hang. And the gap between the midfield line and the forwards becomes forty metres of free ground in which the opponent's holding midfielder can turn, look up and pick out any pass on the pitch, unpressured, all afternoon.

A compact block of any height denies that. Compactness is what makes the ball difficult to receive; height only decides where the difficulty happens. This is why a well-organised side that defends deep and a well-organised side that presses high have more in common with each other than either has with a badly organised side at the same height. Both have short distances. Both make the receiver's first touch awkward. The pressing version, described in detail in the piece on winning the ball back in the seconds after losing it, simply performs the same compactness thirty metres further up.

There is a hard limit on compactness in a low block, though, and it is worth naming because it explains a lot of what looks like poor defending. The goalkeeper and the goal line put a floor under how deep the back line can go. Once the back four is inside the six-yard box there is nowhere left to drop, so the block can no longer absorb pressure by retreating and can only absorb it by defending duels. That is the state every deep defence ends up in during the last ten minutes of a game it is losing control of, and it is the point at which the arrangement stops being tactical and starts being an emergency.

Lateral shifting: the block moves as one, and the ball is faster than any of them

A low block does not stand still. It slides.

When the ball is on the right touchline, the whole block shifts right. The far-side full-back does not stay wide marking a winger nobody is going to reach. He tucks inside, sometimes as far as the far post, because his job in that moment is to be a third or fourth central defender rather than a full-back. The far-side winger drops into the space the full-back has left. The block, in other words, is not a static grid but a shape that translates sideways while keeping its internal distances.

This is where the low block's honest weakness lives, and it is geometric rather than a matter of effort. A ball travels faster than a person. A crisp pass moves at speeds a sprinting player cannot approach, and a switch of play from one touchline to the other has to cover something like fifty metres of lateral distance. The block, having shifted right, has to shift back left. Every player has to cover that ground. The ball does not.

So the block does not attempt to win that race. It attempts to make the race unnecessary. Three mechanisms do that work.

The first is delay on the ball. If the player about to attempt the switch is closed down enough that he cannot hit a flat, accurate fifty-metre pass, the switch becomes a slow, looping one, and the extra second in the air is exactly the second the block needs. This is why a low block is not passive on the ball-far side and does press, selectively, in the one area where a pass would hurt it most.

The second is denying the switch a destination. If the far-side winger who would receive it is not free, the pass has nowhere useful to arrive. This is what the ball-far winger is doing when he tucks in: not marking a man, occupying the lane the switch wants to land in.

The third is accepting the switch and defending the second phase. A team that shifts across and arrives one player short at the far post has not necessarily failed, because the ball still has to be crossed and the cross still has to be attacked. A block that concedes switches all evening and defends its box competently can survive a whole match. Losing the race is fine. Losing the race and then losing the header is not.

The specific choice of who picks up whom once the ball arrives in the box, and whether that is a zonal arrangement or a man-oriented one, changes the whole character of the shape, and the trade-offs are set out in the article on marking a man versus marking a space.

The block is not passive: the four triggers to step out

The lazy description of a low block is that it waits. Waiting is not a defensive action and a block that only waits will eventually be dismantled, because a patient opponent will find a way to put a receiver in a dangerous place with nobody near him.

A coached block presses, but only on cues, and the cues are specific.

A backwards or square pass. The moment the ball goes away from goal, the receiver has his back to the play and the block gains a free second. Whichever forward or midfielder is nearest steps out to make the return pass difficult. This does not usually win the ball. It buys time and it stops a settled opponent from circulating in complete comfort.

A heavy touch or a bad body shape. The same trigger a pressing side uses in the opponent's half applies here: a receiver who has not controlled the ball cleanly, or who has received facing his own goal, is worth attacking. A receiver who has taken it in stride and can see the pitch is not.

The ball played into the pocket. A pass into the space between the defensive and midfield lines is the one thing a low block cannot ignore, and it forces the block's most dangerous decision, which gets a section of its own below.

The ball played into a wide area with a touchline behind it. The touchline is a free defender. A full-back or wide midfielder who steps out to a winger receiving near the line is engaging in a two-against-one that the laws of geometry have already half won.

What separates these from the triggers used by a high-pressing side is the objective. A high press is trying to win the ball in a position from which the regain is immediately dangerous. A low block that steps out is usually trying to stop something rather than start something: to prevent a turn, to force a pass backwards, to make a cross come in from the wrong place. The general family of cues, and how coaches teach the difference between springing a press and merely stepping out, is covered in the piece on what actually sets a press in motion.

The instruction that goes with every one of those triggers is the one people forget. Whoever steps out must be covered. A midfielder who jumps to press without the player behind him filling the space he left has not pressed, he has opened a door and left. In a low block the cover is what makes the press legal, and a block that presses without cover is worse than one that never presses at all.

Three ways a low block dies: the pocket, the cutback, the second ball

Deep defences do not usually get beaten by something spectacular. They get beaten in the same three ways over and over.

The pocket. This is the space between the defensive line and the midfield line, and it is the reason those ten to fifteen metres matter so much. A receiver who gets the ball there, facing forward, has the defence in front of him at close range and can shoot, slide a pass through, or draw a defender out. The block's response is forced and unpleasant: either a centre-back steps out of the line to meet him, which breaks the line and creates a gap for a run behind it, or a midfielder drops onto him from behind, which is slower and often too late.

The cleverest attacking sides do not merely occupy the pocket. They occupy it with two players at slightly different depths, so that one of them draws the centre-back out and the other receives in the hole he has left. That is the specific pattern a low block fears most, and it is why coaches spend so much time on who is allowed to step and who must hold.

The cutback. The most reliable way to score against a deep block, and the one that has reshaped how attacking sides use the byline. A crossed ball into the six-yard box, from wide and in front of the defence, arrives in the area a defence is best organised to deal with, because every defender is facing it and the goalkeeper can attack it. A ball pulled back from the goal line arrives behind everybody. The defenders are running towards their own goal, the goalkeeper has committed towards the near post, and the pass arrives at a player running onto it from twelve metres out with a clear sight of goal.

The geometry is what makes it lethal. A cutback removes the goalkeeper from the equation, because a keeper who has stepped across to cover a low cross cannot recover to face a shot struck back across him. It also removes the defenders' ability to intercept, because they are all facing the wrong way and moving the wrong way. This is why so much modern defensive coaching is about the near-post block and the recovery run to the penalty spot, and why a low block will happily concede a cross from thirty metres and fight hard to prevent one from six.

The second ball. A block that clears its lines has not finished defending. The clearance goes somewhere, and if it goes to an opponent standing twenty-five metres out with no pressure on him, the attack starts again from a better position than the last one. Attacking sides deliberately post a player on the edge of the box for precisely this, and the difference between a deep defence that survives and one that drowns is often nothing more than whether one midfielder has been told to hold that zone rather than joining the defence of the box.

Second balls also connect the whole thing to set pieces, which is the tax a low block pays for existing. A team that defends deep concedes corners and free kicks in dangerous areas as a matter of routine, and a set piece is the one moment when its compactness stops helping, because everybody is in the box and the attacking side gets to choose its arrangement in advance. Sides that are excellent at defending open play and careless at defending corners undo the entire trade, which is why the rise of dedicated set-piece coaching has hurt low-block teams more than anyone else.

40%40%10%10%

• Defensive line, holding depth across the width of the penalty area4
• Midfield line, screening the pocket in front of them4
• Ball-side pressure, engaging the man in possession and his nearest option1
• Highest player, staying up as the counter-attack outlet1

A constructed illustration of one common arrangement with the ball on one flank, not a formation and not a measurement. The point is the count: only three or four players are near the ball at any moment, and the rest are occupying space nobody is currently in.

Show the numbers

Worked example: how a low block distributes ten outfield players

Item	Value
Defensive line, holding depth across the width of the penalty area	4
Midfield line, screening the pocket in front of them	4
Ball-side pressure, engaging the man in possession and his nearest option	1
Highest player, staying up as the counter-attack outlet	1

Why patience destroys a low block and impatience feeds it

Here is the psychological core of the thing, and the part that decides most matches between a good deep defence and a good attacking side.

A low block is a machine for making the opponent do something stupid. It does not primarily aim to win the ball. It aims to bore, to frustrate, to make the game feel unproductive, and to invite the kind of attacking decision that hands over possession cheaply in a bad place.

An impatient attacking side does three things, all of which are gifts. It crosses early from wide areas into a crowded box, which is the highest-percentage clearance a defender ever gets. It shoots from distance, which is a shot the block is happy to concede and which usually results in a goal kick or a rebound the block collects. And it commits too many players forward too soon, which is the condition a counter-attack needs.

A patient attacking side does the opposite, and there is no clever defensive answer to it. It circulates the ball across the width of the pitch without forcing anything, waiting for the block to shift once too often. It puts a receiver into the pocket and accepts a pass backwards when the pocket is covered. It refuses to cross until the ball is on the goal line. And it keeps enough players behind the ball that when possession is lost, the counter has nowhere to go.

That asymmetry is why the low block is often described as a strategy for the weaker side, which is half right. It is a strategy for the side that expects the opponent to run out of ideas or discipline first. Against an opponent with neither, the block does not fail dramatically. It fails slowly, in the eightieth minute, to a cutback nobody could have defended after seventy-nine minutes of shifting sideways.

The corollary is that a low block gets better as the scoreline gets more favourable and worse as it gets less so. A side defending a lead has time on its side and the opponent's impatience compounds. A side defending a deficit is running the same expensive machine with none of the benefit, which is why teams that go behind almost always abandon the block, and why the substitution rules matter to them so much. Being able to make five changes across three windows, as the laws now permit, is worth more to a defending side than to almost anyone else, because fresh legs restore the shuffling far more directly than they restore anything a possession side does.

What it costs, which is more than people think

The common claim is that a low block is the cheap option because you do not have to press. That is wrong in an interesting way.

A low block does not demand the repeated maximal sprints that counter-pressing does, so the raw physical bill is different in kind. What it demands instead is constant low-intensity repositioning, over and over, for the whole match, with almost no rest, because the ball keeps moving and the block keeps shifting. A defender in a deep block rarely stops. He shuffles. Ten or fifteen metres across, back again, two metres forward, five metres back, for ninety minutes. The volume of that work is invisible in highlights and it is not free.

More expensive still is the concentration. Every player in the block is making a positional decision roughly every two seconds, and the cost of a wrong one is not a lost duel but a goal, because there is nothing behind him. That is a fundamentally different psychological load from attacking, where a mistake costs a chance. A defender in a low block who switches off for four seconds concedes. He knows it. He has to know it for the entire match, and sustained vigilance under threat is one of the most tiring things a human nervous system does.

This is why deep defences concede late so reliably. It is not a failure of fitness in the ordinary sense. It is the accumulated cost of ninety minutes of decisions made at a rate that cannot be sustained, in a state of continuous threat, with no possession to provide relief. Having the ball is rest. A team that does not have the ball does not get any.

The third cost is competitive rather than physical. A side that defends deep for most of a season trains for defending deep, and its players stop practising the things attacking sides practise. Attackers in low-block teams get fewer touches in dangerous areas, so they get worse at using them. The block therefore tends to entrench: the longer a team plays it, the less able it becomes to play anything else, and a coach who wants to change approach discovers the squad has been selected and trained for the old one.

The counter exit, and the arithmetic that makes it work or not

The regain is the entire point. A low block that wins the ball and immediately gives it back has performed an expensive ninety-minute holding action for nothing, and a low block that wins the ball and scores has converted the cheapest defending in football into the cheapest goals.

The problem is distance. A ball won on the edge of your own penalty area is roughly eighty-five metres from the opponent's goal on a full-size pitch, and the counter has to cover most of that before the opponent's defensive structure reassembles.

A constructed model, not measured data. It assumes possession is won on the edge of the defending team's own penalty area against an opponent who has committed seven players into the attacking half, and that recovering players run back at a steady pace. It illustrates the shape of the problem rather than any specific match.

Show the numbers

Worked example: how quickly a counter-attack loses its numbers

Item	Opposition players back behind the ball
0s	3
2s	4
4s	6
6s	8
8s	9
10s	10

Read that constructed curve as a deadline. In the first four seconds the counter is attacking a defence that does not exist yet. By eight seconds it is attacking one that mostly does. The counter therefore has to produce a shot, or at minimum a player running at an unbalanced back line, inside a window that closes on its own regardless of what the counter-attacking team does.

That deadline is why the mechanics of the exit are so specific.

The first pass goes forward, always, and it goes to the furthest player it can reach safely. A counter that begins with two sideways passes has spent a third of its window on ground that gains nothing. This is the single most common failure in low-block sides, and it is usually caused by fatigue rather than by instruction: a tired defender takes the safe pass.

The highest player has to be genuinely high, which is the reason a deep block still keeps one or two forwards up the pitch instead of putting all eleven behind the ball. Those forwards are not defending. They are a target that shortens the distance the counter has to cover on the ground, and they are also the reason the opponent's centre-backs cannot both join the attack.

The runners have to be running before the ball arrives. A counter is a race, and a player who sets off after seeing the pass is already two seconds behind a player who set off on the regain. Coaching that anticipation is the difference between a team that counters and a team that simply clears its lines quickly.

And the whole thing has to be selective, because a counter attempted with three players against seven is a donation, and donating possession from your own third is exactly what a low block exists to avoid. A block that counters every time will burn out and concede. A block that never counters will lose one-nil. The full mechanics of the phase, including how a counter chooses between speed and consolidation, are worked through in the piece on attacking a team that has just lost the ball.

A low block, step by step

1. 1The block sets its depthThe back line takes a reference point, usually the edge of its own penalty area, and every other unit measures itself from there. The forwards drop until the whole team occupies a band of roughly thirty metres from front to back.
2. 2The highest player angles the ballThe nearest forward does not chase the ball, he shows the opponent one direction, usually towards a touchline, so the block knows in advance which way it will be shifting.
3. 3The block slides to the ballEvery player moves towards the side the ball is on while holding his distance from his neighbours. The far-side full-back tucks in towards the far post and stops being a full-back.
4. 4The ball is switchedA long diagonal beats the shift, because a pass travels faster than a team. The block does not race it. It delays the passer, denies the receiver a clean first touch, and reforms while the ball is in the air.
5. 5The pass into the pocketThe one entry the block cannot ignore. Either a centre-back steps out to meet the receiver before he turns, or a midfielder drops onto his back. Whoever goes, somebody must fill behind him in the same movement.
6. 6The cross comes inFrom wide and in front of the defence, the block wins the header more often than not, because everyone is facing the ball. The block is not trying to prevent this cross. It is trying to prevent the other one.
7. 7The ball reaches the goal lineNow the block is in trouble. The near-post defender blocks the low pull-back, a midfielder recovers to the penalty spot, and the goalkeeper holds his line rather than committing across.
8. 8The second ballThe clearance lands somewhere. One midfielder has been told not to enter the box precisely so that he is standing where it lands, because an unpressured shot from the edge is how a deep block concedes without ever being beaten.
9. 9Possession is wonThe decision point. Two questions, answered in under a second: is there a forward pass, and are there enough runners to make it worth going? If either answer is no, the block keeps the ball and takes the rest instead.
10. 10The counter goes forward immediatelyThe first pass is the longest safe one, the highest forward holds it up or runs beyond, and the runners are already moving. The window closes in seconds, so a counter that begins sideways has already lost.
11. 11The block resetsWhether the counter produced a shot or a throw-in, everybody walks back to the reference point and the depth is taken again. Getting eleven players back into shape between attacks is most of what a deep defence actually does.

The sequence a well-drilled deep defence runs through. Distances are the conventional coaching bands rather than measured thresholds, and different coaches teach different numbers.

What has changed recently, and it is not what you would expect

Three changes in the last few seasons have quietly made a low block harder work than it used to be, and none of them are tactical.

The first is the enforcement of added time. Since officials began adding time for goal celebrations, substitutions and treatment with far more precision, the effective length of matches has gone up, and the additional minutes fall disproportionately on the team that has to keep concentrating. A block that could hold for ninety-three minutes now sometimes has to hold for ninety-nine, and those are the minutes in which concentration has already failed. The change was made to recover playing time lost to stoppages, and it recovered it from the pocket of the team least able to afford it.

The second is the change to Law 12 in force from 1 July 2025. A goalkeeper who controls the ball with his hands for more than eight seconds now concedes a corner kick to the opposition, replacing the old six-second rule that carried an indirect free kick and was almost never enforced. The referee counts down visibly from five. For a deep defence this removes one of its cheapest resources, because a goalkeeper holding the ball while his team catches its breath was a legitimate and widely used way of buying twenty seconds of rest. The sanction is now severe enough to be worth giving, so referees give it, which is exactly why the IFAB changed it.

The third is the professionalisation of set-piece coaching. A low block invites corners, and a decade ago that was a manageable cost. Against a side with a dedicated set-piece coach, rehearsed routines and a designed blocking structure, it is a much larger one, and the arithmetic of the trade has shifted accordingly.

There is also a slower change worth naming. The rise of the inverted full-back and the two-pivot build-up has made attacking sides much better at keeping their own rest defence intact, which directly attacks the low block's exit. A counter-attack works because the opponent is disorganised. An opponent who has arranged three players behind the ball on purpose is not disorganised, and against those sides the low block loses much of the payoff that justified the cost.

When a low block is correct, and when it is a confession

Both versions exist, and they look identical for the first ten minutes.

A low block is the correct choice when the gap in individual quality is large enough that any other approach concedes better chances. Pressing high against a technically superior side means losing the ball repeatedly in your own half against players who will punish it, which produces worse chances conceded than defending deep. The block is not the safe option in that situation, it is the option with the lower expected damage, and choosing it is analysis rather than fear.

It is correct when the opponent's threat is specifically pace in behind. Against a side built around runners, taking away the running space is the whole game, and no amount of pressing bravery substitutes for it.

It is correct in the specific circumstances of a two-legged tie, an away match against a stronger side, or the last twenty minutes of a game in which a point is worth more than the chance of three. Game state is a tactical input and pretending otherwise is romanticism.

And it is correct as a phase rather than a plan. Almost every side in top-level football defends in a low block at some point in every match, because the ball keeps ending up in their own third whether they intended it or not. A team that has never practised it will defend it badly when it happens.

It is a confession in two circumstances. The first is when a team defends deep because it cannot do anything else: not a decision but a symptom, produced by a squad that cannot keep the ball or cannot run. The second is when the block has no exit. A deep defence with no plan for what happens after the regain is not executing a strategy, it is postponing a goal, and every clearance comes straight back. That is the version the phrase parking the bus was invented for, and the distinction between it and a coached block is not the shape at all. It is whether anything happens in the five seconds after the ball is won.

The offside law is what makes the whole spectrum possible, incidentally, and a defence choosing its height is choosing how much of that law to use. A high line uses it aggressively as an offensive weapon. A low block barely uses it at all, which is why deep defences almost never catch anyone offside and why a coach who complains about that has misunderstood his own arrangement. The mechanics of the law itself, including where the line is drawn and when it applies, are covered in the piece on the offside law and how it is actually judged.

What to watch when a team defends deep

Ignore the ball for a few minutes of the next match in which one side is camped in its own half. Four things tell you whether you are watching a coached block or a collapse, and all four are visible without replays.

Measure the block front to back, not top to bottom. Find the deepest defender and the highest forward and judge the gap between them. A band of about thirty metres is a structure. A band of fifty metres with the forwards loitering on halfway is a team that has stopped defending with two of its players and will concede in the space between the lines.

Watch the far-side full-back when the ball is on the opposite flank. If he is tucked in towards the far post, the block is coached. If he is still standing wide marking a winger who is forty metres from the ball, nobody has told him that his job changes with the ball's position, and the middle of the box is one body light.

Find the player who does not join the box defence. There should be one, standing somewhere around the D, doing apparently nothing. He is there for the second ball. A block with nobody in that zone will concede an unpressured shot from the edge sooner or later, and it will look like bad luck.

Time the first pass after a regain. This is the tell that separates a block with a plan from a block that is simply surviving. If the ball goes forward inside a second and a half, and two players are already running, there is an exit. If it goes sideways twice while everyone catches their breath, there is not, and you are watching a team that will hold out until it does not.

Do that across ten defensive sequences and you will know more about how the side is organised than the possession figure will ever tell you. The low block is one of the most legible arrangements in the game, provided you are willing to spend a few minutes watching ten players who are nowhere near the ball and doing, to the untrained eye, absolutely nothing.