VAR in V.League: When Slow-Motion Angles Haven't Reached the Root of the Problem

In a V.League 1 matchday, the most contested moment was not a goal, but the three minutes a VAR team spent answering a seemingly simple question: did the ball touch the hand or the chest? I replayed that moment seventeen times. From the main camera angle, the defender's arm was tucked close to his body. From the angle behind the goal, the distance between the ball and the arm was only a few centimetres. The same instant, two different truths — and both camera angles were correct.

That is the nature of the work I have pursued for nine years: not to decide who is right or wrong, but to find the truth that cannot be disputed. VAR has no emotion. But VAR does not create justice on its own either. It only magnifies what people have prepared in advance. And in V.League, most disputes come not from the technology, but from what has not been prepared.

Context: technology arrives, process follows behind

VAR first appeared in V.League 1 in 2026, after a trial period in selected matches. In principle, the technology intervenes in four categories of incidents: goals, penalties, direct red cards and identification of players. On paper, everything is clear.

But Vietnamese football has a particularity that no rulebook writes down. The match calendar is dense, pitch conditions vary from round to round, and the number of camera angles at each stadium is not the same. A match at a stadium with seven cameras will produce a different conclusion from one with only four cameras. The same law, the same incident, but the 'resolution of truth' depends on infrastructure.

This is the fundamental difference from major leagues. In the Premier League or the Champions League, VAR infrastructure is standardised at every stadium, and referee teams go through hundreds of hours of simulation training before the season begins. In V.League, we have the technology, but not yet a training and standardisation system to match it. The result is that every stadium, every referee team, every match may operate in a slightly different way — and those small differences accumulate into big disputes.

I do not mean to deny the efforts of those working in refereeing. On the contrary, I believe they are working under far more difficult conditions than their colleagues in Europe. The problem is not the individual, but the system that supports that individual.

Analysis: the error lies in frame selection

What I want to make clear: the problem with VAR in V.League is not the technology, but the lack of a common standard for the 'reference point'. When an offside is determined, the question is not only 'where is the player standing', but 'from which body part do we measure, at which frame, and who locks that frame'. If each VAR team selects frames in a different way, the error will not come from the machine, but from the people operating it.

I once reconstructed an offside by cross-checking IFAB Law 11 against four consecutive frames. In the first frame, the attacking player was still level with the last defender. In the third frame, he had moved ahead. The gap between the two frames was only 0.04 seconds. That means the entire decision — goal or no goal — depends on which frame is chosen as the 'moment the ball leaves the foot'. A decision worth a whole season, contained in four hundredths of a second.

The moments the naked eye misses, data never forgets. Without a unified guideline on how to select frames, VAR is merely moving the dispute from the stands into a closed room, rather than resolving it.

There is another aspect rarely discussed: time. Fans complain that VAR takes too long. But time is not the cause; it is the symptom. A VAR team taking three minutes is usually not because the incident is complex, but because they do not yet have a step-by-step incident-handling process. In leagues that operate smoothly, the VAR referee and the on-field referee have a standard communication protocol: who speaks first, who confirms, when to stop. Without that protocol, every incident becomes a negotiation, and negotiation always takes time.

Every slow-motion replay has its own truth. My job is to find the truth that cannot be disputed. But 'cannot be disputed' is a high standard, and it is only achieved when everyone in the VAR room looks at the same frame, measures the same point, and understands the same law in the same way.

I do not believe in luck. I believe in numbers repeated a hundred times. One controversial VAR incident says nothing. But ten incidents of the same type, repeated across many matchdays, say something about a systemic problem. And that is when the process needs to change, not the people.

Based on my experience watching matches, most VAR errors in V.League fall into one of two groups: wrong frame selection, or wrong interpretation of the boundary between 'handball' and 'no handball'. The first can be fixed by process. The second is much harder, because it falls into the non-numerical grey zone — where data can no longer answer, and human judgement takes over.

This is what I always remind people: do not let data speak for everything. There are situations where the numbers point one way, but the context points another. A handball in a natural collision is entirely different from a handball in a deliberate tucking of the body. The same indicator, two meanings. And no algorithm can distinguish human intent better than humans themselves.

Contrarian view: emotion is not the measure of consistency

Fans often react to VAR with emotion: 'why does it take so long', 'why is it like this sometimes and like that other times'. I understand those reactions. But emotion is not the measure of consistency. What makes VAR controversial is not that it is wrong, but that it forces us to see errors the naked eye previously missed.

The paradox lies here: before VAR, a wrong decision would pass in a few seconds, and the crowd would forget it. After VAR, the same wrong decision is replayed, analysed, and remembered. VAR does not make referees wrong more often. It only makes errors visible. The problem is that we have not yet built a culture of accepting error — neither on the fans' side, nor on the organisers' side.

I learned from the U19 tournament that mistakes are less frightening than nobody measuring them. At sixteen, I recorded forty-seven foul situations in a U19 match, found one missed incident in the penalty area in the 78th minute, and sent a comparison table to the organisers. No one responded. The lesson I drew was not 'don't send it again', but: if nobody measures, mistakes will repeat without anyone knowing.

The empty stadium taught me that noise never scores. The same is true of VAR. The jeers in the stands do not change an offside. Only the right frame and the right law can do that. And the responsibility for creating those two things belongs to the system, not to the crowd.

Conclusion: standardise the process before buying more cameras

The refereeing trend in V.League in the coming seasons will not lie in buying more cameras, but in standardising the process. Three things to do first: issue unified guidelines on selecting reference frames for each stadium; build a standard communication protocol between the VAR referee and the on-field referee; and publish statistics on intervention incidents so fans have a basis for comparison instead of relying only on feeling.

Football does not change because you look at it more closely. Football changes because you look at it more correctly. And with VAR, 'looking correctly' is not about looking longer, but about looking by the same standard. When the standard does not exist, every camera angle can become evidence — and when everything is evidence, nothing is evidence.