The Empty Column: What Vietnamese Football Has Not Yet Recorded

Last Saturday night, I sat in my small apartment in Milan and opened a V.League match data sheet that a friend who works as a coach had sent over. The expected goals column was empty. The passes per defensive action column was empty. The progressive carries column was empty. Three white boxes sat side by side, exactly like three chairs nobody occupied in a dressing room after a defeat. My friend had added a short line: "No data. We'll have to watch with our eyes." I read that line twice. Then I thought back to March 2026, when European stadiums closed and I video-called a twenty-year-old AC Milan defender three times a week. He was living alone at Milanello, with no family nearby, sinking into depression. He told me the coaching staff analysed matches by replaying footage frame by frame, like in the nineties. The data was there, but empty in a different way. I have been thinking about those empty boxes a great deal since I began following Vietnamese football from a distance. Not to criticise a football nation. But because I believe what I have written for thirty-eight years in this trade: pressure does not sit on the shoulders, it sits in the way a man ties his laces. And laces, sadly, have no data column. World football has entered an era where every pass is quantified, every off-ball run is tracked by GPS coordinates, every substitution is checked against a probability model. Premier League clubs spend millions of pounds a season on data systems. Barcelona once signed a contract with an analytics firm to track every movement of Lionel Messi for a decade. In Serie A, where I live, even mid-table clubs like Sassuolo or Atalanta employ full-time data scientists, and those scientists sit in the front row of transfer meetings. But in Vietnam, the gap is not one of will. It is one of infrastructure. This is what I remind myself every time I write about my homeland's football from a city more than eight thousand kilometres from Hanoi. I have no right to compare a V.League club with Manchester City when its budget is a fraction of the wages of one Premier League substitute. Let me start with a number. According to the Asian Football Confederation's annual report, the total revenue of Vietnam's entire professional league system in a recent season was lower than the revenue of one mid-table Serie A club. That means every dong spent on data analytics in Vietnam has to compete directly with player wages, stadium rent, bus costs, board and lodging. This is not an easy choice, and I am not standing here to judge who chooses wrong. Three years ago, I had a chance to talk with a former Vietnamese international who won more than forty caps. He told me about a video review session after a World Cup qualifying defeat. The coaching staff opened the footage, pointed at a wasted counter-attack, and said the midfielder had run to the wrong position. The midfielder stayed silent. But the next day, when everyone had gone, he found the assistant coach and said: "I ran to the right position. But I ran there because I saw their defender standing out of line. If I had data on how they pressed, I could explain it." The assistant coach had no answer. Because that team, that night, had no pressing data. That was the first empty box. And it was not the only one. The second empty box sits in the column of injury and return. This is the field I have tracked most closely for more than a decade, and it is also where I hold my clearest view, a view I have quietly expressed through every article rather than ever shouting as a slogan. I believe that demanding a player "prove himself" in his first match back is a systemic cruelty. It raises the risk of re-injury, and worse, it turns recovery, a complex biological process that a body needs time for, into a contest of will. I remember Đoàn Văn Hậu. Born in 2026, he played for SC Heerenveen in the Netherlands, and he returned to Vietnam with a knee injury. I followed every step of his recovery through the bulletins, and what I did not find, what I searched for and never found, was a training-load tracking sheet. At European clubs, a player recovering from a knee injury wears a GPS device in every session, and his high-speed running metres are capped precisely, day by day. From one week to the next, load is only increased when internal markers such as heart-rate variability, sleep quality, and subjective fatigue allow it. In Vietnam, most clubs do not have enough equipment to do that for a full squad. That is not the coach's fault. It is the fault of a system not yet built. But when a system is not yet built, the one who pays is the player, and sometimes a career is cut short not because the player lacked talent, but because no one counted the metres he ran in the third session of the second week after his return. The third empty box sits in the transfer column. And this is where I hold a view shaped by nearly two decades at the end of a corridor: player agents are the biggest hidden cost of the transfer market, and the noise they generate distorts the entire valuation system. Transfer news does not begin with a phone call, it begins with a glance. But when the agent talks more than the player, that glance is drowned out by the voice of a man who never takes the pitch. In the V.League, clubs usually negotiate directly with players or their representatives, but they do not always have enough data to know a player's true value. Is a midfielder who scored seven goals last season really worth the same as one who scored five but ran more, created more, and lost the ball less? The answer sits in the data. But when the data does not exist, the answer sits in feeling. And feeling, though I deeply respect it as the observer's tool, is the most fertile ground for expensive mistakes. There is another example I have followed for years: Nguyễn Quang Hải. Born in 2026, once seen as the emblem of Vietnam's golden generation. When he moved to Pau FC in France, I read every report about him in Vietnamese, French and Italian. What struck me was that European analyses spoke a great deal about his off-ball movement, about how he occupied space between the lines, qualities that Ligue 2's data charts could quantify. But in Vietnam, before he left, there was almost no public data sheet describing his style of play in quantitative language. He was described with words like "exquisite", "explosive", "vision". All of them true. But those words did not help a European scout answer the question: does he run enough at high speed, and can he keep the ball under sustained pressing? At academies like Hoàng Anh Gia Lai, PVF, or Viettel, there have been steps forward. I know PVF has invested in youth tracking systems, and Viettel has a small but serious analytics department. Hoàng Anh Gia Lai, in the era of its well-schooled generations, was once held up as the model of an organised academy. But three academies, however good, cannot cover a football nation with dozens of professional clubs and hundreds of youth teams nationwide. The gap lies in between: between a few excellent centres and the rest of the system. In World Cup qualifying, Vietnam's national team produced moments I will never forget, even watching them on a screen in Milan. But I also remember the matches where the team lacked a tool to understand opponents at the micro level: they had no data on the passing tendencies of each opposing defender under pressure, or on the average positions their midfield shifted into when losing the ball. That information is available in Europe for only a few thousand euros a match. But buying it is not merely a cost. It is a decision about philosophy. Now I want to come back to what I truly believe. I do not think these empty boxes are a failure. I think they are the truth. Over thirty-eight years in this trade, I have learned something that no perfect data sheet ever taught: when a number is empty, people are forced to use their eyes. And when forced to use their eyes, people are forced to stand closer. Standing closer means sitting in a dressing room for forty minutes, not recording, only writing by hand in a worn notebook, and hearing a captain who had just arrived from Juventus describe private player meetings the coaching staff knew nothing about. Standing closer means noticing who sits next to whom after a defeat, before anyone opens their mouth. That is why I never open an article with the scoreline. The scoreline is the one data point everyone has, and the least telling of all. I stand at the end of the corridor and hear clearly the sigh of an era. In Vietnam, that sigh does not come from an analytics dashboard. It comes from a room where someone has just switched off the lights, and a chalk line still lingers on the tactics board. There is a paradox I want to state plainly, even if it may irritate some. Vietnamese football does not lack data. It lacks the infrastructure to store data. Thousands of young coaches, hundreds of assistants, dozens of former players sit on the bench or in the video room every week. They see everything. They see which player runs into the wrong block, they see which team presses lopsided, they see a striker losing confidence in the way he ties his laces. That knowledge exists. It is simply not recorded in a retrievable format. In Europe, that knowledge is systematised into databases. In Vietnam, it lives in people's heads. And when people leave, when an assistant coach changes clubs, when a former player retires, that knowledge leaves with them. That is one of the biggest losses I see in Vietnamese football, and no data column records it, because the knowledge disappears before anyone manages to type it into a machine. Let me tell one more story. It is not about Vietnam, but it is about a principle that Vietnamese football, and I believe Southeast Asian football more broadly, can draw from. In July 2026, I followed Ivan Perišić to Moscow for the World Cup semi-final between Croatia and England. In the 68th minute, Perišić equalised at 1-1 with a volley, sending the match to extra time, and Croatia won 2-1. After the match, he told me he had spent three months practising finishing with his left foot, his weaker foot, after studying data on goalkeeper Jordan Pickford. Thirty-seven sessions repeating a single movement. What I want to say is not a story of hard work. What I want to say is about data that was available for a player to read: data on the goalkeeper's positioning, on his judgement tendencies, on the angles he exposed. At the top, people read data to find a gap no one else can see. In Vietnam, players are not short of the intelligence to do the same. They lack the tools. They lack an analyst sitting beside them to say: "Look, this goalkeeper tends to dive left when the ball is outside the box." But they have something many European players have lost: a sensitivity to people. They read team-mates through a glance. They sense opponents through a breath. That is another data source. One that charts cannot measure, and perhaps never will. And here is what I want to place on the table. If Vietnamese football adopts Western data infrastructure without preserving this human intuition, it will be a loss, not a gain. I do not say this out of nostalgia. I say it because I watched a twenty-year-old defender in Milan live alone in an apartment where every physiological marker was tracked, yet no one called him three times a week to ask whether he slept well. When the stadium is empty, I finally understand what applause really is. Football without spectators is still beautiful, but without breath it is not. And technology can measure the rhythm of breathing, but it cannot measure breath itself. That difference, I believe, is where Vietnamese football has a chance not only to catch up but to move ahead, if it chooses the right path. Not the path of imitation, but the path of grafting. If I had to point to one concrete signal of progress, it would not be which club signed a contract with which analytics firm. It would be something smaller, and I have tracked it for two years: the number of former Vietnamese players enrolling in coaching licences that include a data-analysis module. The number is rising, slowly. Each of them is a bridge, carrying both the intuition forged on the pitch and the new knowledge learned from a spreadsheet. That is a real signal. Not a prospectus, but a life in transition. Football does not wait for data to be beautiful. But data, placed in the right spot, can make Vietnamese football fairer to the very people who play it.