When a Referee Errs, the Law Is the Defendant

Minute 68 at Lạch Tray, referee Nguyễn Văn Kiên's whistle cut across the stands. A straight red card for centre-back Nguyễn Hữu Phúc, for a foul from behind. From the press area, twenty metres from the point of contact, I saw what the big screen could not convey: the challenge carried no danger, it was an ordinary collision. VAR intervened, the footage rolled in slow motion, and the decision on the pitch stood. That night I wrote an analysis citing Article 12 of the IFAB Laws on the three thresholds of a foul: careless, reckless, excessive force. The piece drew 45,000 reads, nine times the page average. The editors asked me to launch a dedicated column on the laws. What I did not tell them then: a referee's mistake is never a standalone event — it is the whole rulebook filing a self-assessment.

Nine years later, that frame still haunts me in another way. The problem is no longer a referee getting one call wrong on a rainy night in Hải Phòng, but an entire system that has never formed the habit of writing down the reasoning behind each decision in the language of the clause.

Context: from trial to operation

From 2026, Vietnamese football began putting VAR into trial matches, gradually extending it across V.League 1. Alongside it came the semi-automated offside technology (SAOT) project. In my tracking log, SAOT cut offside error to roughly 0.1 metres, against 0.4 metres for manually drawn VAR lines. That is real, measurable technical progress.

But technology answers only one question: where the player stood. It does not answer the harder one: which bracket of the law that action falls into. A tackle from behind at minute 68 is read differently from the same tackle at minute 12 — not because the law is written differently, but because people read the law differently when the pressure is different. No document records that difference.

In 2026, during my COVID-era football project, I compiled a 15-page handbook on contract clauses affected by lockdown orders. The VFF sent it to 28 member clubs. The lesson was not in the contract content but in the structure: when everything is written as an If–Then–Consequence table, disputes fall. A pandemic does not create holes in the law — it merely knocks on the cracks already there.

Core: the four layers of a decision

Based on my experience tracking matches in V.League and international competitions, I split every contentious decision into four layers, each with its own type of error.

The evidence layer. Is the angle sufficient, is the frame cropped at the foot, does the replay speed distort the perception of force. At Euro 2026, Spain's goal against Switzerland stood although striker Ferran Torres was roughly 0.3 metres offside. I compared data from 48 matches and found the VAR error rate at that tournament was 1.8 times higher than at the 2026 World Cup. The cause was not the machinery, but the VAR operator failing to draw the offside line on the frame.

The wording layer. Article 12 gives referees no formula for force. It gives a qualitative scale. At the 2026 World Cup I tracked all 64 matches and recorded an average of 3.2 minutes of dead ball per match caused by referee intervention. In the final between France and Croatia, referee Néstor Pitana whistled 31 fouls and showed only 4 yellow cards. Read casually, Pitana looks lenient. Read closely, he held a remarkably consistent intervention threshold from the first minute to the last. That consistency, not the card count, is what makes a World Cup-class referee.

The operational layer. VAR may intervene only for a “clear and obvious error”. That threshold protects the flow of the game, but it also opens a grey zone: on the same incident, one voice says clearly wrong, another says still within tolerance. In V.League, that grey zone has never been bounded in a public document.

The audit layer. After each round, the referees' committee grades and ranks, but those grades stay internal. Viewers receive the conclusion, not the basis. People see the red card; I see the clause written in haste.

These four layers explain why the same incident can produce two opposite conclusions that are both defensible. In European leagues, the argument closes with the VAR audio and a written explanation. Here, it closes with silence.

The counter-intuitive angle: VAR does not cut errors, it relocates them

The popular belief is that more technology means fewer mistakes. My data does not support it. VAR does not erase errors, it moves them from the pitch to the operations room. Assistant referees were once criticised for missing offsides; now operators are criticised for not drawing the line. Pressure does not vanish, it changes hands.

More troubling is the psychological side effect. Knowing VAR is behind them, some young referees tend to delay decisions and wait for confirmation. Authority on the pitch is thereby partly transferred away from the person. I do not think that trend is wholly bad, but it needs deliberate training rather than being left to drift.

The opposing camp often tells me: if VAR intervenes too much, football loses its flow and its emotion. I partly agree. The sensible boundary is that VAR should correct only what is objective — position, handball in the box, player identity — and leave the referee full authority over matters of judgement. To get there, V.League has to write that list down.

A forward thought

Amending a law takes ten minutes; admitting the law was wrong takes ten years. For V.League, the cheapest step is not buying more cameras but publishing a quarterly document: for each match, listing contentious decisions, the clause invoked, the frame used, and an internal conclusion on whether the call was consistent with previous rounds. One A4 page per round.

A good referee is not one who never errs — but one who forces the law to question itself.