The data gap in V.League: When Vietnamese football fails to keep its memory

One July evening, I sat in Madrid and reopened a recording of a V.League match. The picture was fine. The sound was fine. But when I wanted to know how much expected goals the home side created, where they shot from, which zones they pressed, how they lost the ball, I could barely find anything. In Spain, a single La Liga match leaves behind thousands of data points, dozens of open sources, hundreds of analyses. A V.League match can vanish from the system's memory within days. I once believed in absolute numbers, until the World Cup taught me that emotion is a variable too. But in Vietnam, we do not even have the numbers to believe or doubt. The biggest problem in Vietnamese football is probably not player quality, and not tactics. It is that we cannot preserve what happened. And when nothing is preserved, nothing can be learned. CONTEXT: A LEAGUE THAT DECIDES ON FAITH Working in Spain, I see that every transfer decision at a La Liga club comes with a thick data file. People do not just look at how many goals a player scored. They look at where he shoots from, the quality of his chances, his ability to create for teammates, how much he participates in pressing, how quickly he recovers after losing the ball, his injury trend by age, and his fit with a specific tactical system. Spanish clubs are not inherently smarter. They have the infrastructure to do this, and if they do not, they are punished in the table. In V.League, most decisions still rest on something else: the eye of the insider, relationships, and faith. That is not wrong in principle. Many great players were discovered by eye, in every football nation. But there is a difference between using the eye to discover and using the eye to fully replace a recording system. When a V.League club weighs signing a striker, they usually have a few match recordings, a few recommendations, and a few scattered metrics. They do not have a data picture thick enough to know whether that player fits their system. I do not say this to criticise. I say it because I have been on both sides. I grew up in Vietnam, learning football by watching, by listening, by remembering. Then I went to Spain, where memory is replaced by data. And I realised that Vietnamese football does not lack intelligence. It lacks memory. What is striking is that this problem does not only affect big clubs. It affects the whole ecosystem. Without data, a scout has nothing to present, a coaching staff has nothing to analyse, a board has nothing to compare between options. Every decision becomes a gamble dressed up in professional language. THE CORE: WHAT IS ACTUALLY LOST WHEN A MATCH IS NOT RECORDED Imagine a V.League season with no detailed data. What actually disappears? First, the ability to assess process. In football, results are the most visible thing and also the most deceptive. A team that wins 1-0 with a single shot may have played worse than a team that lost 0-1 with ten clear chances. If we only record the score, we record the outcome of luck, not the quality of the process. In V.League, when a team wins three in a row, people say they are in form. But form is a concept that cannot be measured. Some teams win because the system has clicked. Some win because the opposing goalkeeper erred. Some win because the referee gave a controversial penalty. Without data, these three cases look identical in the table. I have lived this personally. In 2026, when Spain lost to Russia in the World Cup knockout round, I lost a bet because I trusted 75 percent possession. On the surface, Spain dominated. In the data, they generated roughly 0.7 expected goals from twenty shots. The result did not lie about the result. It lied about the process. In V.League, we fall into the same trap constantly, except we lack the data to notice we are being fooled. Second, the ability to develop young players. If an academy wants to know whether a seventeen-year-old is improving, it must compare him with his earlier self, and with players of the same age elsewhere. Without data, progress becomes a feeling. And one coach's feeling can differ entirely from another's. Young players grow up in an environment where their career is decided by the evaluator, not the process. This is a serious consequence: it turns talent development into a game of chance, dependent on whether a player meets the right teacher. Based on my experience watching matches, I once heard a young coach in Vietnam say he knows which players are improving just by looking. I believe him. But I also know that, at the system level, looking does not scale. One person can watch twenty players. An academy with two hundred players needs a system. Players like Nguyen Quang Hai or Nguyen Hoang Duc came through serious academies, and it is worth wondering how many equivalent talents were missed because nobody recorded their journey. Third, the ability to price the market. When V.League lacks data, a player's value is decided by reputation and negotiation, not by measurable ability. This produces a subtle consequence: clubs pay high prices for already-famous players and ignore capable but unknown ones. The transfer market becomes a market of asymmetric information, where the well-connected always beat the data-driven. A concrete example. Suppose a V.League club needs a defensive midfielder. It has three options: an established name, a young player from its own academy, and a low-profile player from another province. Without data, the decision tilts toward the established name, because that is the safest choice in media terms. But with data, the low-profile player might have the best defensive metrics, the best fit with the system, and the lowest cost. Data does not guarantee a correct decision. But it opens options the naked eye overlooks. Now consider the financial structure of most V.League clubs. Most revenue comes from a single source: the owner or a sponsor tied to the owner. Broadcast revenue is low compared with regional leagues. Commercial revenue is limited. Gate receipts are a small share. In such a structure, the incentive to invest in data infrastructure is very weak, because data benefits appear only after years, while owners want results within the season. This is where I want to pause. I do not believe V.League's problem is a lack of technology. Many clubs have bought analytics software. Many teams have tablets on the bench. But a tool without a process is just decoration. The issue is this: data needs a system to attach to, and V.League largely lacks that system. This leads me to an observation about the relationship between data and power in Vietnamese football. In developed football nations, data is often used to challenge power — to question a coach's decision, a sporting director's contract. In V.League, data is often used to reinforce power — to justify a decision already made. This is a cultural difference, not a technical one. And it explains why buying technology alone is not enough. A COMPARISON FROM ELSEWHERE I remember Euro 2026. Italy did not win Euro 2026 by luck; they won because they turned data into a style of play. Roberto Mancini built a pressing system in which every player knew exactly when to step up, when to drop, when to cover. Italy's PPDA was the lowest in the tournament — they allowed opponents very few passes before engaging. But the important thing is not the metric itself. The important thing is that it reflected a system trained over thousands of hours, and designed on data about each player and each opponent. When I wrote that analysis at twenty-one, I had only public data and a homemade spreadsheet. Yet even with that modest tool, I could point to a pattern the naked eye could not see. In V.League, we have beautiful pressing moments. But we often do not have a pressing system. That is the difference between an action and a style of play. An action can come from inspiration. A style must come from a system. And a system, to survive, must be recorded, measured, and continuously adjusted. In 2026, with empty stadiums, football exposed system and choice. Without crowds, teams living on collective emotion suddenly lost part of their strength. Teams running on system held firm. I spent part of my internship that year comparing Real Madrid's home performance before and after fans returned. Average goals dropped, while expected goals barely changed. In other words, the team did not create worse chances; they converted them less, under the pressure of a home ground with fans. That is a signal about the role of psychology. In Vietnam, the empty-stadium season also left similar signals — but few could read them, because we lacked the data to compare before and after. THE CONTRARIAN ANGLE: DATA IS NOT WHAT IS MISSING Here I want to turn my own argument around. The common assumption is: V.League is weak because it lacks data. Give it data and everything improves. I am not sure. Data does not give answers; it only reveals the questions we are brave enough to ask. If a football nation is not ready to face hard questions, data only makes things more uncomfortable. In Spain, data has value because there is an ecosystem to receive it. There are scouts who read data. There are coaches who use data to adjust training plans. There are boards that use data for long-term decisions. There is media that uses data to ask questions rather than merely report. V.League does not yet have that ecosystem. Feed a dense dataset into an environment with no readers, and the usual outcome is: data is shelved, or used to rationalise decisions already taken. There is one more thing, and I want to say it carefully. Vietnamese football has something Spanish football is gradually losing: improvisation. I do not say this to romanticise. I say it because datafication has a price. When everything is measured, everything tends to become similar — because teams optimise along the same set of metrics. La Liga increasingly has teams playing alike, because they read the same kind of data. If V.League rushes into datafication without preserving identity, we may trade improvisation for precision and still fail to reach the top level. A team is not a collection of metrics; it is a system breathing through every pass. If we only measure without understanding, we will measure the breathing without understanding why it breathes. This is why I do not believe in copying the Western template. A V.League club does not need an analytics department like Manchester City's. It needs one person, one process, and a culture that lets data be used for honest debate. Honesty, in this case, matters more than sophistication. There is a lesson from AFC club licensing: when Vietnamese clubs want to play in Asian competitions, they must demonstrate financial and organisational structure. That is a form of mandatory record-keeping. If we extend that mindset to match data, we will have a foundation not only to satisfy regulation, but to genuinely improve. SO WHAT IS NEEDED? I do not believe in big solutions. I believe in small steps that can be measured and repeated. Step one: record everything, even before knowing what to do with it. Before analysis, there must be raw data. A V.League match should leave a complete record — events, positions, timings, players. This does not require expensive technology. It requires discipline. And discipline is something a club can build without raising its budget. Step two: train data readers, do not just buy tools. A club can hire a young analyst on a modest salary, and that person can create far more value than imported software. Data is a skill, not a product. And skills take time to form. Step three: start from the academy. Clubs with academies — and V.League has a few genuinely serious ones — should be where data is tested first. There, timelines are longer, short-term pressure is lower, and the benefit of tracking young-player progress is clearer. An academy that records a player's journey from fifteen to eighteen will own an asset no club can buy with money: an honest picture of development. Step four: publish part of the data. This sounds risky, but it works. When data is public, it creates an analytics community, and that community creates positive pressure. In Spain, many of the best analyses come from people who work for no club at all. They are skilled fans. V.League has such people — I have met a few. But they have no data to work with. LOOKING AHEAD I do not expect V.League to have a data system on par with La Liga within a few years, and I do not think that is the right goal. But I believe that in ten years, the gap between V.League clubs will no longer be decided only by budget. It will be decided by who records more, who reads more carefully, who dares to ask harder questions about themselves. Fans look at the score; I look at probability. After 2026, I know both can collapse. But there is one thing that does not collapse: process. A team can lose one match to luck, but it cannot lose a whole season only to luck. And if we start recording that process — every match, every player, every year — then in ten years, Vietnamese football will have what it lacks today: a memory. The system's memory, not the fans'. I write this from Madrid, thousands of kilometres from Hanoi, but I write about home. And what I have learned after years of working with data is this: change does not come from big tools. It comes from recording a match and not letting it disappear. Do that a thousand times, and we will have a different football — not because we became smarter, but because we started to remember.