VAR in V.League: When Referees Must Relearn How to Blow the Whistle

In the 84th minute at Hang Day Stadium, the referee left his position at the center of the pitch and walked toward the monitor set up on the touchline. The stands held their breath. Eleven away players surrounded him, pointing and shouting. In the stands, thousands of fans pulled out their phones — not to film the incident, but to wait and see what the final decision would be. Three minutes later, the referee returned and pointed to the penalty spot. A roar of outrage erupted from the home fans' section. On the big screen, the words VAR Check Complete appeared, but few in the stadium truly understood why the decision had been reversed.

That image has become familiar in V.League 1 over recent seasons. The technology has arrived, but trust has not followed. For someone who has spent seven years following disciplinary decisions in Europe, the notable point here is not whether the referee was right or wrong on a specific incident, but that the VAR operation system in Vietnamese football is exposing gaps in process — gaps that every league in the world has passed through.

When VAR was introduced to V.League 1, the expectations were clear: reduce serious errors, increase consistency in crucial decisions, and, above all, rebuild fans' trust in the fairness of the competition. In principle, VAR intervenes only in four categories: goals, penalty kicks, direct red cards, and cases of mistaken identity. This is a very narrow frame, and that narrowness is where every dispute begins.

In Europe's major leagues, it took nearly five years for VAR to move from a chaotic trial phase to a relatively stable process. The English Premier League launched VAR in the 2026-2026 season amid endless offside-line controversies, then had to continually adjust intervention thresholds, review durations, and even how decisions were announced to fans in the stadium. Spain fared no better: early seasons saw a string of baffling reversals, forcing organizers to publicly release the audio dialogue between the referee and the VAR team to regain some measure of trust.

The common lesson across all those leagues is this: VAR is not a device, but a process. And a process only works when three elements are present — properly trained people, consistent intervention standards, and transparency in communication with the public. Remove any one, and the technology becomes a new source of dispute rather than a solution to the old one.

In V.League, the biggest problem lies not in image quality or the number of cameras, but in the consistency of intervention standards between matches and between different referee teams. In one match, a similar collision may be ignored; in another, it is immediately reviewed. Fans have no data to cross-check, so they fall back on feeling — and feeling is always biased toward their own team.

Based on my experience following hundreds of matches with VAR, I have observed a paradox: the more interventions occur, the more trust falls, not rises. The reason is simple. Every time VAR overturns a decision, it inadvertently admits that the on-field referee was wrong. If that frequency is too high, fans begin to question the competence of the entire system, not just one individual. In mature leagues, VAR intervention rates are tightly controlled and typically account for only a small fraction of all disputed situations.

One under-discussed aspect is the psychological factor. Assistant referees and center referees in V.League work under enormous pressure, sometimes in front of packed stands and less-than-kind words. When VAR arrives, they gain an extra layer of insurance, but also an extra layer of hesitation. A referee once decisive may now pause, waiting for a signal from the VAR team instead of trusting his own judgment. That dependency, if prolonged, erodes professional instinct — something no technology can replace.

There is a telling statistic worth reflecting on: during the period when European leagues played without spectators due to the pandemic, the average yellow-card rate dropped by roughly 12 percent compared with the previous season. Numbers do not lie, but the people who record them can. What that figure truly reflects is the relationship between stadium pressure and on-field behavior. When no one is shouting, players react less, referees face less pressure, and decisions become calmer. The stands may be empty, yet the referee still must keep his eyes sharp — but the pressure is entirely different.

In V.League, the stands are almost always full, and emotions always run at their peak. That means the task for Vietnamese referees is harder than that of their European colleagues in one respect: they must be both correct and fast, withstand pressure from all sides, and now also explain their decisions to a VAR team dozens of meters away. A match lasts 90 minutes, but discipline lasts an entire season. One slip in a single match can ruin a title race or a relegation battle.

Notably, look at how public opinion reacts. After every controversial decision, two camps emerge almost instantly: one blames the referee, the other blames VAR. Very few ask about the process behind it — how intervention standards are built, how VAR teams are trained, how information is conveyed to fans in the stadium. People watch players run; I watch when they stop at the right moment — and in this case, people watch the decision; I watch the process that produced it.

There is an uncomfortable truth few want to admit: most VAR controversies in V.League are not a technology problem, but an internal-communication problem. When the referee walks to the monitor, when he decides to overturn, when he explains to players — all those moments unfold in silence, far from the fans' view. No audio is released, no public explanation follows the match, no reference document exists for supporters. The result is an information vacuum, and an information vacuum is always filled with suspicion.

I do not believe in luck; I believe in slow-motion replays. But a slow-motion replay is only valuable if it is interpreted by a clear standard and explained to everyone. Otherwise, it is merely a better tool for prolonging an argument.

Looking at how advanced leagues operate, one solution has been proven: publishing the dialogue between the referee and the VAR team after each match. The English Premier League began trialing this, and while controversy remains, it at least gives fans the right to understand. Transparency does not make decisions more correct, but it makes them easier to accept — and in football, acceptability is sometimes as important as accuracy.

Another solution is to build a public set of intervention standards, applied uniformly across the whole season, with concrete examples for each category of incident. If fans know that a collision in round 5 will be handled exactly the same way in round 25, trust will gradually be built. The chaos of a match is the surface; beneath it lies the rule of numbers — and that rule must be published, not guessed.

Finally, the human-training factor cannot be ignored. VAR is only as good as the people operating it. A VAR team lacking experience, lacking joint practice time with the referee, will produce inconsistent decisions. In top leagues, VAR teams undergo hundreds of hours of simulation training before entering a real season. This is an investment rarely seen, yet it determines the quality of the entire system.

In football, there are victories no one notices. A correct decision in the 90th minute, made within three tense minutes, brings no fame to anyone, but can save a club's entire season. That is the kind of victory Vietnamese football needs to learn to honor — instead of remembering only the mistakes.

I take notes more slowly than my colleagues, but my mistakes have an expiry date. That is true for a writer, and true for a referee. A wrong decision can be erased from memory, but a weak process will leave traces across many seasons.

So rather than arguing over each incident, perhaps Vietnamese football should ask a bigger question: is our refereeing system ready for the VAR era, or is it merely using technology to cover gaps in process? Technology does not create fairness. People, with clear standards and transparency, do.