VAR Covers Half the Fixtures: V.League and the Fairness Gap in Decisive Matches

On a single V.League 1 matchday weekend, four games kick off at almost the same time, at the end of a three-week stretch in which most clubs have played every four days. Two of them have a VAR truck parked beyond the touchline, cabling running along the technical area, a three-person team in a cabin watching twelve camera angles. The other two begin and end with the whistle of a single referee, two assistant referees and a fourth official. That is everything the laws allow, and everything they have.

One league. One rulebook. One matchday. Yet a penalty-area challenge in the first game is examined across twelve angles, slowed frame by frame, measured by a calibrated line. An identical challenge in the third game is seen only by three pairs of human eyes, moving at real body speed, from fifteen to twenty metres away, in a fraction of a second in which the brain must process ball direction, foot position and two players' running lines at once.

I have sat on both sides of that comparison. After years of reviewing match footage, what keeps me awake is not the wrong decisions. It is the lawful decisions made under two completely different sets of conditions, then treated as though they were equally fair. The league table does not distinguish. It only adds points.

A rollout limited by budget

V.League 1 introduced VAR in the 2026 season on a phased basis. That was technically sound: FIFA's VAR protocol requires a dedicated review room, a minimum camera setup, a stable transmission line, and a crew of video assistant referee, assistant VAR and replay operator. None of that can be built at every stadium in one season.

But technical limits always carry a competitive consequence. When VAR units are scarce, the organiser must choose which matchdays are covered and which matches are not. The criteria usually cited are the importance of the fixture, its media appeal, and stadium infrastructure. The third is neutral. The first two are not.

I do not believe anyone deliberately favours a club. Yet a system that selects by importance automatically produces a paradox: the less media interest a match attracts, the less VAR coverage it receives — and those are precisely the matches where a refereeing error can decide the relegation fate of a province, a city, a locality whose economy is tied to its club.

The operating cost of a VAR crew for one match in Southeast Asia is commonly put at a few thousand US dollars, plus training and staff maintenance. For a league whose revenue comes mostly from domestic sponsorship and broadcast rights, that is not a small line item. It becomes small, however, when set against the value of top-flight survival — where sponsorship contracts, broadcast money and the transfer value of an entire squad depend on staying in the highest division.

Vietnam's annual-season format sharpens that gap. With far fewer rounds than European leagues, each match carries greater weight. A point dropped in round twenty-five cannot be recovered with three points in round ten. That pressure flows down to the referee, and in matches without VAR it flows down to one person.

The referee's eye: the 3F model

In my analytical work I use a three-step check I call 3F: Foul, Field, Frame.

Foul is the first question — was there contact, was that contact illegal, did the player actively seek the contact. Field is the second — where is the point of contact relative to the penalty area line, and where is the attacker relative to the defensive line at the moment the ball is released. Frame is the third — which frame is the first frame of contact, and which is the last before everything becomes undeterminable.

Those three questions resolve most disputes, on one condition: there must be enough imagery to answer them. In a match without VAR, Foul can be answered by eye and Field by position, but Frame is nearly unanswerable. The human eye cannot rewind. That is where error accumulates.

In a match with VAR, all three questions can be answered, but a different problem appears: the intervention threshold. The laws do not give VAR the right to re-referee the match. They give it the right to correct a clear and obvious error or a missed serious incident. So the real question is not whether there was contact, but whether the error was clear and obvious.

This is where two matches in the same round, in the same league, can reach opposite conclusions on nearly identical incidents — and both be correct under the laws.

What the data says about the asymmetry

Across the last three V.League seasons with VAR, the sample is still too small for firm conclusions, so I present this as a signal rather than proof.

In matches with VAR, the average number of penalties awarded is higher than in matches without it, while the number of yellow cards is lower. Those two trends travel together often enough that coincidence is hard to sustain.

The most plausible explanation: with VAR, referees are more confident awarding penalties, knowing there is a safety net behind them. Without VAR, referees tend to manage the game with cards — calling players over, warning them, using bookings to cool things down rather than using scoreboard decisions. Two different game-management mechanisms producing two different kinds of match.

For viewers, the difference surfaces only in the result. For those in the trade, it surfaces in the tempo of duels, in whether players still dare to attack the box in the final ten minutes.

Among attackers, the difference is clearest. A striker who lives by attacking the box, such as Nguyễn Tiến Linh or Phạm Tuấn Hải, benefits directly from VAR, because collisions with centre-backs — the kind Nguyễn Thành Chung or Đoàn Văn Hậu must handle every week — get reviewed frame by frame. In the opposite direction, playmakers such as Nguyễn Quang Hải or Nguyễn Hoàng Đức are affected differently: they must adjust how they fall and how they shield the ball, because penalty-seeking behaviour is far easier to detect with twelve cameras.

This feeds back into tactics. A side built on set-piece aerial duels and box grappling — a model Nguyễn Văn Toàn, Nguyễn Công Phượng or Đỗ Hùng Dũng have operated within in different systems — gains a clear edge in VAR matches and loses it in non-VAR matches. Same squad, same game plan, two different outcomes, decided by whether a truck is parked outside the touchline.

The final twenty minutes and the five-substitution rule

The five-substitution rule entered the laws in 2026 and was later made permanent. It gives deeper squads more options, sustains high intensity to the final whistle and reduces injury load in congested calendars. That upside is real.

The other side is rarely discussed: when both teams can change half their outfield players, the final twenty minutes become a war of attrition. The leading side sends on defensively robust legs to protect the score. The trailing side sends on attackers to reclaim the game. Collision intensity in the 75th to 90th minute rises, and tackles from behind — the most dangerous kind for both players and referees — cluster in exactly that window.

This is the intersection few notice: the window with the highest foul density is also the window in which the referee is most fatigued, and the window in which decision speed matters most. A V.League centre referee covers roughly 10 to 11 kilometres per match, including dozens of high-intensity accelerations. At minute 85, the ability to hold an optimal viewing position drops markedly compared with minute 25.

In a VAR match, the VAR crew is the net for that window. In a non-VAR match, there is no net. And the paradox is that teams built on counter-attacking, set pieces and box duels are the ones most exposed when that window goes unmonitored.

Matches also run longer. Added time in VAR leagues is generally higher, partly because review time is added back at the end of each half. For a side chasing a goal, an extra four or five minutes can be an entire season. For a side protecting a lead having used all its substitutions, those minutes are the most dangerous stretch of the night.

The counter-view: VAR relocates controversy, it does not erase it

Many people expected VAR to bring silence. It did not.

Before VAR, the argument was whether the referee saw the incident. After VAR, the argument is which frame the referee chose. That question is far harder to answer, because it is not a question about fact but about how fact is read.

A challenge can look like a foul in frame twelve and entirely legal in frame fifteen. Both frames are real. Neither is fake. The final decision depends on which frame the VAR crew picks as the anchor — and that is a choice, not a measurement.

I once heard a FIFA referee put it in a line I wrote down verbatim: with VAR, he no longer fears getting it wrong, he fears getting it different. Without VAR, getting it different still draws criticism, but people forgive it because they understand human vision has limits. With VAR, getting it different becomes a deliberate choice, and no one forgives a deliberate choice.

That is why some referees become more passive when VAR is present. They wait. They let play run and rely on the earpiece. The referee no longer decides the match; the referee executes a decision made elsewhere. For fans, that erodes the sense of a game with someone in charge. For players, it changes how they contest duels.

Who is protected, and who is not

There is a question I consider more important than VAR itself: what about the second tier, the third tier, the women's game, youth football.

Fairytale stories in lower-league football are the most heavily consumed and the least protected. A village club earning promotion, a young player stepping from a dirt pitch onto a big stage — those stories sell tickets and advertising. But when a refereeing error in a second-tier match decides a club's promotion, that story vanishes from the pages, and it vanishes before anyone can verify it.

Real structural reform of resource distribution almost never arrives. People talk about VAR, about sanctions, about refereeing reform. But VAR costs money, and money flows where the audiences are. That is the logic of the market, not the logic of fairness. I understand it. I still think something is lost.

A decision can be lawful and still wrong in substance; what people need is fairness, not merely accuracy. In the lower divisions, both are usually absent at the same time.

On error, and how we talk about error

A mistake on live television is like a mistake on the pitch: look it in the eye, learn from it, blow the whistle for the next match. I learned that at twenty-three, after a World Cup opening match in which I mispronounced a striker's name three times in the first half despite six pages of preparation. From that day I built a two-step process for every name I say on air: check the standard phonetic transcription, then listen to a clip of the player or a local reporter pronouncing it.

Refereeing has no equivalent mechanism at the same level of transparency. Nobody asks a referee to rewrite his process after a bad decision and publish it for the audience. In Spain, where I live and work, referees attend recorded technical sessions where their decisions are dissected in front of peers, and the reports are kept as data for the following season. In Vietnam, debriefing sessions exist, but their content is not published. Unpublished means unverifiable. Unverifiable means the argument never closes — it is only buried.

Data does not blow the whistle, but it illuminates the angles the naked eye misses. A simple table — how many matches this round had VAR, how many decisions were overturned, what the average intervention time was in seconds — would turn an emotional argument into an evidence-based conversation. The cost of publishing those numbers is close to zero.

In the past I built an index of referees' sensitivity levels based on their last forty matches, measuring card frequency and award tendencies. Colleagues initially called me mechanical. Later the index was used to preview decisive fixtures, and it proved accurate often enough to be trusted. Based on my experience following matches in both V.League and European competitions, I believe publishing refereeing data in Vietnam would produce a similar effect within a single season.

An ending that has not closed

Three technical suggestions, not slogans.

The first is to publish a referee consistency index each round — not a right-or-wrong score, but a measure of how uniformly similar incidents are handled. A referee does not need to be perfect. He needs to be consistent, and that consistency must be measurable.

Alongside that, release the audio of the conversation between the referee and the VAR crew, at least seventy-two hours after the match. Some leagues have done this and controversy dropped noticeably — not because people stopped being dissatisfied, but because they understood the logic behind the decision.

And most importantly, allocate VAR budget by risk rather than by appeal. Matches whose results directly affect relegation or the title must be prioritised for VAR coverage, even when the stands are emptier.

None of those three requires changing a single word of the laws. They require one decision of principle.

People remember the goals; I remember the whistles that protected them. To watch a match through a referee's eye is to see what no one else sees, and to learn not to conclude too quickly.

Next season there will again be matchdays when two simultaneous games are watched under two different sets of conditions. The question is not whether that continues, but whether we are willing to name it.