V-League: When Punishment Is Not Enough, the Real Problem Lies in Football Education

I still keep the habit of taking minute-by-minute notes when I rewatch match footage. Not to count passes, but to mark the moments when a player decides to go into the ball with both feet instead of with his head. In the match where Văn Hậu received a red card after his challenge on Doãn Ngọc Tân, that moment came at a position that was not dangerous at all — midfield, with the ball already beyond both players' control. An experienced player, a former national team member, chose a solution that any highly licensed coach would erase from the first page of the curriculum. What followed was a four-match suspension. That number is in the disciplinary record. But the record cannot measure what happened ten years earlier.

In the same early-season window, Tấn Sinh and Văn Sơn — two different players, two different situations — both chose to take down Đình Bắc. A young player establishing his position, targeted in the same way by two different opponents. If this were an accident, the overlap probability would be too low to be random. If it were a tactic, it needs to be named correctly.

Three events in one early-season window. Three different names. One repeating pattern.

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Context: The conversation Vietnamese football has been avoiding

Over many years of watching the V-League from São Paulo, I have noticed one thing: Vietnamese people talk a great deal about on-field violence, but rarely about where it is born. We debate suspensions, referees, and organizing committee responsibility. We name players, name clubs, name moments. We do not name the education that produced them.

A European expert, in a recent interview with Dân trí, framed the problem differently. He did not start with penalties, but with how a child is taught to tackle. He did not ask why players foul, but who taught them that fouling is an acceptable option. He did not look at the match record, but at the curricula of those teaching at youth level.

This is not a comfortable way to frame the issue. It is far more comfortable to attribute everything to a few exceptional individuals, a few bad challenges, a few names to criticize. But when three separate events appear in the same window, the individual-attribution framework starts to wobble.

I spent weeks re-reading disciplinary records, cross-checking them against my own notes across several seasons. I wanted to find a counter-argument — that the V-League was simply going through a bad spell, that things would settle as the season progressed. I did not find one. What I found was a pattern that, placed on the analytical desk of any football culture in Europe or Japan, would be treated as a structural signal.

Gaps do not lie.

The gap here is not on the pitch, but in the training curriculum.

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Core: Slide-tackling technique is a teachable skill, and Vietnam is teaching it wrong

When I talk to analytical colleagues in Brazil — people working with academies from U-11 to U-20 — they are often surprised when I tell them that in many places in Vietnam, slide-tackling technique is not taught as a separate subject. They assume it must be. In Europe, tackling technique is part of the B and A licensed coaching curricula, with specific modules: approach angle, decision timing, body center-of-gravity position, standing-foot placement, and how to withdraw the leg once the ball has passed beyond control.

At one youth academy I visited while working in Asia, U-14 trainees were taught tackling technique across three separate sessions before being allowed to use it in a competitive match. Three sessions. No contests. Only repetition of the movement, correction of posture, and memorization of one principle: if you cannot control the ball after the challenge, you have failed even if the opponent falls down.

This is not a small detail. Poor tackling technique produces three specific consequences that Vietnamese football is now facing.

First, a two-footed challenge — the movement Văn Hậu executed — is not an advanced technique but a basic error banned in every modern curriculum. It is not taught. It only appears when a player panics, loses position, or learns from a teacher no one ever forced to correct that posture.

Second, targeting a specific player — as Tấn Sinh and Văn Sơn did to Đình Bắc — is not technique but emotional tactics. It is not in any lesson plan. It is in the dressing-room culture.

Third, a player's reaction after a foul — standing up, dusting off the hands, not looking at the opponent — reveals something deeper: they were not taught that the challenge was wrong. They were taught that it is part of the game.

When I reconstructed a diagram of violation situations over the past few seasons, a common point emerged. Most dangerous challenges did not occur in dangerous areas. They were not attempts to save the ball. They were attempts to send a message. And if that is correct, penalties cannot fix them, because penalties cannot fix messages.

Twelve meters deep, where the match is decided before the ball rolls.

In this case, twelve meters is not the distance between lines on the pitch. It is the distance between what a player was taught at fourteen and what he does at twenty-seven. The older he gets, the harder that distance is to close.

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What the data does not have, and what it does

I am often reminded by colleagues that I focus too much on numbers. In this case, I must confess the opposite: some things matter more than numbers, and we are missing exactly those numbers.

There is no xG in a disciplinary record. No PPDA. No per-zone duel win-loss ratio. No ball-progression data for dangerous challenges. What we have is a list of events, and a list of events cannot analyze a mechanism.

This is a specific weakness I want to state clearly, because it affects the quality of the entire public debate. When process data is absent, any debate about on-field violence tends to polarize between two ends: individual blame, or environmental excuse. Rain. Poor pitches. Relegation pressure. These are real factors, but they are not root causes. They are catalysts.

Distinguishing root cause from catalyst is the most important point in this entire analysis. If poor pitches are the cause, we only need to upgrade pitches. If rain is the cause, we only need to reschedule. But if these are only catalysts, then improving conditions will not fix the behavior. It will only make bad behavior appear slightly less often in certain situations — enough for us to believe the problem is solved, until it rains again.

Another detail that data rarely captures: a player's tackling movement reflects his mental state at that moment. When analyzing dangerous challenges on tape, I always watch body language before contact. A player entering the challenge upright, shoulders open, eyes on the ball — that is a late challenge, not a malicious one. A player entering with a lowered posture, shoulders closed, eyes on the opponent's leg — that is a deliberate challenge. No camera automatically categorizes these two situations. Only a person taking notes does.