Clear Rules, the Referee Is the Variable: VAR, the Five-Substitution Rule and the War of Endurance in the Final Twenty Minutes

Minute 78, Al Thumama Stadium, Doha. Morocco lead Portugal 1-0 through Youssef En-Nesyri's header in the 42nd minute. Walid Regragui stands close to the technical area, hands in his pockets, eyes fixed on the clock. He has used four of his five substitutions. On the pitch, Achraf Hakimi loses half a step on every sprint; Sofyan Amrabat runs as if his lungs were made of steel; and Portugal keep feeding the left flank, where Rafael Leao has just come on with his energy intact.

That moment captures the story of modern football in the final twenty minutes. The law allows five substitutions, yet only eleven players may stand on the pitch. VAR allows a passage of play to be reviewed, but it does not allow a match to be reviewed. Between the two, the referee is the real variable.

I have watched football long enough to know that every major controversy begins with the same question: what does the law say, and how did the person applying it read it? In 2026, analysing the World Cup quarter-final between Portugal and Morocco, I spent forty-eight hours reviewing footage just to answer one question: how did Morocco break Portugal's pressing, and at what tempo did the referee let the match flow? My 3,500-word piece was cut to 1,500 words, but the data was not cut anywhere. It stayed in the notebook.

That is how I work: identify the situation, check it against the law, and only then issue a verdict. Never the other way round.

Context: two revolutions at once

On 8 May 2026, IFAB — the body that governs the laws of the game — approved a temporary rule allowing each team up to five substitutions, but only across three stoppages, not counting half-time. The rule arrived as European leagues tried to restart after the pandemic compressed the calendar into a solid block. The stated reason was clear: protect players' fitness against a schedule of one game every three days.

At first it was temporary. It was extended for the 2026-21 and 2026-22 seasons. In 2026, IFAB made it permanent: each competition chooses whether to use five substitutions. The Premier League once went against the tide. After using five during the 2026-20 restart, English clubs voted to return to three for 2026-21, then accepted five again from 2026-23. UEFA used five throughout. That inconsistency is exactly what made me sit down.

At the same time, VAR moved from experiment to standard. It appeared at the 2026 Confederations Cup, was first used at a World Cup in 2026, and swept into the Premier League from 2026-20. The 2026 World Cup added semi-automated offside technology. Within about five years, two things changed how a match is controlled: one changed the people on the pitch, the other changed the people making decisions.

I remember 2026, when I was a student writing analysis for a football site, noticing that the Premier League kept three substitutions while UEFA allowed five. I wrote a 2,000-word piece but lacked data. I spent one hundred and twenty hours reviewing ten Bundesliga matches — where five substitutions applied — and recorded an average of about 3.2 substitutions falling between the 60th and 75th minutes. I built a data table and published four days later. The lesson: a tactical claim only stands when at least three concrete numbers hold its back.

The core: how five substitutions reshaped the final twenty minutes

Before 2026, the final twenty minutes belonged to coaches who could read tempo. Three substitutions forced selectivity: a change for injury, a change for tactics, or saving one for an emergency. Each substitution was a card that could not be taken back. With five substitutions split across three windows, the game changed completely. A coach can replace an entire midfield, swap both flanks, or send on a target striker and then replace him with a winger in the next window.

But this is where data matters more than feeling. Five substitutions do not distribute benefits equally. They reward squad depth. A big club whose bench is full of internationals can send on, in the 60th minute, a player worth almost as much as the opponent's entire line-up. A small club must choose between making a change or keeping a unit that is running smoothly. One law, two opposite outcomes.

I once sat with a tracking table to test this. In elite matches, the gap in goals scored after the 75th minute between the group of teams with the deepest squads and the rest tended to widen during the five-substitution era. The popular reading is that the law protects players against a packed schedule. The less spoken reading is more accurate: the law hands an extra weapon to the side that already owns an armoury.

That leads to a concrete tactical consequence. When both teams have five substitutions, physical pressure in the final twenty minutes does not fall; it is pushed together. Players who come on in the 60th minute sprint at maximum intensity, while those who stay must strain to hold their shape. The match becomes an organised war of attrition: whichever side stores more fresh energy for the second half gains the edge. Coaches no longer manage eleven players; they manage sixteen across three windows.

Second angle: a high defensive line is a bet

The final twenty minutes is also when every high line is put on trial. I have written about this enough to know it is not an aesthetic choice. Pushing up is a calculable bet: the team wagers that high pressure will recover the ball before a long pass finds the space behind the line.

The metric here is PPDA — passes allowed per defensive action. The lower the number, the higher the pressure. When a team's PPDA rises across three recent matches, that signals a pressing block losing its ability to hold. With five substitutions, a high-line team gains an option: replace an entire midfield around the 65th minute to sustain intensity, or accept dropping the block and living on counter-attacks.

Morocco at the 2026 World Cup is the example I rewatched most. They did not push up recklessly. They organised a low, disciplined 4-1-4-1 block, forcing opponents to circulate the ball sideways and wait for a mistake. Their running intensity throughout the tournament was among the highest of the deep-running teams. Against possession sides like Spain and Portugal, Morocco accepted ceding the initiative and bet on defending their box.

En-Nesyri's goal against Portugal came from a phase seemingly against their philosophy: a cross, a header, the 42nd minute. But holding 1-0 until the 90th minute was the hardest part, and that is where the five-substitution law exposed its limits. As key players picked up injuries and had to leave the pitch, Regragui was forced to spend substitutions on reasons he never chose. The bet did not lose on tactics; it was drained by fitness and luck.

My direct match-watching experience says one simple thing: a high line is safe only while a team can renew its energy. Once substitutions run out, a high line becomes a line left behind. I only record the moment the gambler turns over his cards, so readers can see the outcome for themselves.

Third angle: VAR does not erase controversy, it relocates it

Alongside the war of endurance runs the war of decisions. VAR was created to fix clear errors — a valid goal disallowed, an offside missed, a red card overlooked. Technically, it does that job. But it also shifts the entire focus of controversy from the referee's whistle to the VAR room, where a group of people sitting before monitors decides whether an incident deserves a review.

At the 2026 World Cup, VAR appeared for the first time and produced a string of contentious penalties, especially for handballs. At the 2026 World Cup, semi-automated offside cut decision time to a few dozen seconds, but did not cut the debate about which body part should anchor the offside line. Technology answers the technical question; it does not answer the human one.

For me, this is the crux. The offside law is not ambiguous. It states clearly that a player is offside if any part of the head, body or feet used to play the ball is nearer the goal line than both the ball and the last defending player. Anyone reading the law reads the same sentence. But how an assistant referee decides when to raise the flag and when to wait, and how the VAR team chooses which frame to draw the line on — that is where the ambiguity lives. The law is never ambiguous; only the person with the whistle is.

I believe in the naked eye, but VAR taught me that the naked eye can lie. A referee standing thirty metres from an incident cannot see whether the ball struck a hand or a chest. VAR gives him a second eye. But the second eye also has an owner. And that owner must answer to the same standard the on-field referee answers to.

Fourth angle: consistency and the referee's memory

There is something data cannot measure: professional memory. A referee who penalised a similar incident last round carries that memory into the next. This creates two sides. The good side: decisions tend to be consistent. The bad side: a repeated mistake can become precedent, and precedent is harder to undo than a wrong whistle.

The first mistake is not there to be erased, but to be compared against later. I learned this from my own trade. In 2026, a first-year student interning at an online football site, I wrote a live report and misnamed a striker four times in the first half. An editor fixed it and reprimanded me. After the match, I spent two weeks reviewing the entire group-stage footage to memorise the exact names and shirt numbers of one hundred and twenty players. I built a personal data table for player name transliteration. Since then, before publishing, I cross-check names, shirt numbers and positions at least twice.

Referees need such a notebook too. Not to second-guess themselves for fun, but so that each new incident has a comparison point. A tackle from behind in round one and a similar tackle in round twelve should be read on the same scale. When the scale shifts mid-season, people stop arguing about the law; they argue about whether the referee is holding the standard.

Discipline is not there to punish, but to let the match continue. A red card that is correct by law can still be a bad decision if it destroys a match in the tenth minute over a harmless technical foul. The referee's art lies in keeping the match flowing, not in brandishing cards to prove authority. The same situation, two ways to blow the whistle — the law is never ambiguous, only the person with the whistle is.

Fifth angle: when the two revolutions meet

Here the two stories must be joined. The five-substitution law increases the number of fitness decisions in the final twenty minutes. VAR increases the number of technical decisions across the whole match. Added together, the modern referee must manage a match with more stoppages, more swings, and more incidents to judge than twenty years ago.

This creates an overlooked consequence. Added time grows longer. When a match offers up to ten substitutions across two teams, plus VAR reviews, plus injury treatment, average added time climbs. In major leagues, a half stretching by seven, eight or even ten minutes is no longer rare. It is a direct result of football wanting to be more accurate and to protect players more.

But longer added time opens a new door for late goals. And late goals are where a high line pays the price. This is a closed loop: the substitution law lengthens matches, longer matches drain fitness, drained fitness collapses high lines, collapsed high lines produce goals in added time, and those goals are then examined by VAR frame by frame. All within a causal chain the laws accidentally built.

I have spent time recording matches with three or more goals scored after the 85th minute. The striking part is not the number, but that most came from teams that had used up their substitutions before their opponents, or from teams still fielding a fresh player while the opponent's bench had run dry. Stored energy became a tactical metric on par with possession.

Counter-intuitive angle: a law meant to protect is handing rewards to the strong

This is where I want to speak plainly, because evasion is not how I write. The five-substitution law was born for a just reason: to protect players during a packed schedule. Nobody objects to that goal. But the goal and the consequence are two different things.

The consequence is this. In a match where both teams have five substitutions, the side with better squad depth sends on higher-quality players at the same moments. A small club cannot buy more depth. It can only choose to use fewer substitutions, or use them on weaker options. The quality gap between the two benches becomes a gap on the scoreboard, especially in the final twenty minutes when fitness is decisive.

There is a counter-argument worth considering: five substitutions let small teams rotate more and avoid injuries. True. But rotation only has value if the bench has people to rotate. A club with eleven elite players and the rest academy prospects will not benefit from five substitutions the way a club with twenty elite players does. One law, two outcomes.

The same happens with VAR, but more subtly. VAR does not distinguish strong from weak. It only demands infrastructure: many cameras, a control room, trained staff. Wealthy leagues deploy it smoothly; poorer leagues still struggle with fewer cameras and longer review times. Technology is fair on paper, but its cost is not remotely fair.

And here is the consequence I consider deepest: both reforms shift power toward those with resources. A law created to protect players unintentionally rewards clubs with more players to protect. Technology created for fairness rewards leagues with money to buy it. Football remains a series of openly placed bets, and this time, the player with the deeper purse is dealt first.

I do not write this to demand scrapping five substitutions. I write to say a reform cannot be judged only by its good intentions. It must be judged by the actual distribution of benefits, and that distribution, in this case, leans one way. Without a cost-sharing mechanism — a fund to support VAR infrastructure for smaller leagues, or a spending cap tied to the substitution law — reform will keep widening the gap rather than narrowing it.

Sixth angle: refereeing as a craft of reading, not memorising

A thick law book can be memorised in weeks. Refereeing cannot. The hardest part of the job is reading a match as it unfolds: which team is deliberately playing rough, which is looking to dive, which player is losing composure, and whether a decision this minute opens a wave of backlash the next.

In derbies or decisive matches, I often watch how a referee sets the scale in the opening minutes. A good referee uses the first few incidents to send a signal: today I will allow this level of contact. Blow too much in the first ten minutes and the match crumbles into a string of stoppages. Blow too little and it escalates into chaos. That balance is not in the law book; it is in the experience.

VAR changes this part of the craft. With a review system behind him, the on-field referee knows his decision can be overturned. That can make him more cautious, or more dependent on the VAR team. Some referees keep their authority; others begin waiting for the earpiece before raising a flag. Both carry risk. I have rewatched incidents where an assistant hesitated to raise the flag while waiting for VAR, and that very hesitation created new controversy.

The pandemic taught me that laws also need to breathe. When football returned after the 2026 shutdown, everything was temporary: substitution numbers, water breaks, bench spacing. Those temporary things forced lawmakers to accept that law is not a fixed block of stone. It is a system that can be adjusted. But once adjusted, there must be a mechanism to review it, or the temporary quietly becomes permanent before anyone looks back.

Open conclusion: the final twenty minutes will not return to what it was

Football in the final twenty minutes this season differs from a decade ago. More changes, more decisions, more moments under the microscope. The five-substitution law turned the bench into a battlefield, and VAR turned every touch in the box into a miniature trial.

What I want readers to carry from this piece is not a closed conclusion. I want you to look at the scoreboard and ask: did that goal come from tactics, from fitness, or from a human decision? Those three answers do not exclude each other. They overlap in every minute of added time.

A high defensive line is a bet; I only record the moment the gambler turns over his cards. And in modern football, the one who turns the last card may be a player sent on in the 80th minute, or a referee standing before a monitor in the 95th. Both hold a share of the outcome, and both deserve to be read by the same standard.

If one day lawmakers sit down to review the five-substitution law, I hope they start from the distribution of benefits rather than the question of intention. Football does not lack good intentions. What it lacks is a mechanism ensuring good intentions are not turned into an advantage for those already strong. Only then can we say the law served the match, rather than a group of people inside it.

Discipline is not there to punish, but to let the match continue. And a match can only continue fairly when every team — rich or poor — enters the final twenty minutes with the same chance to turn over its cards.

Data and monitoring-method appendix

So this piece can be compared against later, I record the milestones and methods I used while watching, with the warning that football is a high-uncertainty sport and every tactical conclusion is for reference only.

Law timeline: on 8 May 2026, IFAB approved the temporary five-substitution rule across three windows; it was extended for the 2026-21 and 2026-22 seasons; in 2026, IFAB allowed competitions to make the option permanent. UEFA used five throughout. The Premier League used five during the 2026-20 restart, returned to three for 2026-21, then returned to five from 2026-23.

VAR timeline: the 2026 Confederations Cup was the first major tournament to use VAR; the 2026 World Cup was the first World Cup to use it; the Premier League adopted it from 2026-20; the 2026 World Cup added semi-automated offside technology.

My personal monitoring method has three steps. First, record every substitution with minute and score at the time. Second, record PPDA in fifteen-minute blocks to see whether the pressing block keeps or loses intensity. Third, record every VAR intervention with review time and final outcome. These three tables give me a picture thick enough to compare across matches, leagues and seasons.

I always require at least three concrete data points before making a tactical claim. That is the professional discipline I set for myself in 2026, after realising that a piece lacking data, however well written, is only an opinion. And opinions cannot be compared against later. The first mistake is not there to be erased, but to be compared against later — true for both the writer and the person with the whistle.