The Topsoil of Vietnamese Youth Football: When U18 Learns to Win but Forgets How to Play

The Topsoil of Vietnamese Youth Football: When U18 Learns to Win but Forgets How to Play A summer afternoon in August 2026, Hang Day Stadium sat nearly empty. I took a seat in the third row, among a few dozen scattered spectators, watching U19 Hanoi face U19 Viettel in the qualifying round of the U19 National Championship. My notebook was already dense with handwriting, and on my phone sat a six-metric tracking table I had built myself back in 2026. The final score: Hanoi won 3-0. But what kept me in my seat after the final whistle was not the scoreline. It was a name my scoresheet had barely highlighted. He did not score. He did not assist. He was not named among the match's best players. Yet over 90 minutes, he touched the ball 67 times, completed 58 of 64 passes — a 91 percent rate — and made 11 off-ball movements that opened space without ever receiving the ball. The players across from him were taller, heavier, faster, and they scored three goals. But I sat there asking myself: ten years from now, which of them will still be standing on a professional pitch? I have carried that question for seven years, since my first season covering the Viettel youth team. And it is the question I believe Vietnamese youth football is answering wrongly — not because talent is lacking, but because of how we measure talent. CONTEXT: A NAIVE BELIEF That wrong answer is not one individual's mistake. It is a system. And it begins with a naive belief: that youth football is merely a miniature version of professional football. That belief has seeped into every academy. In V.League 1, a club fighting relegation needs players who can endure two matches a week, who are fast enough to counter, strong enough to duel. Those demands are reasonable at first-team level. But pushed down to U18, they become a trap. For seven years I have tracked the six biggest academies in Vietnam: HAGL-JMG, PVF, Viettel, Hanoi, SHB Da Nang, and more recently Nutifood. I have watched hundreds of youth matches from U15 to U21. One pattern repeats: Vietnamese youth teams increasingly prioritise physicality and increasingly neglect technique. The numbers speak. At the 2026 U19 National Championship finals, I measured the average height of the four semifinalists: 1.78 metres. Eight years earlier, at the same tournament, the figure was 1.71 metres. A seven-centimetre rise in eight years. Meanwhile, the average number of passes per match among those semifinalists fell from 412 to 347. Successful dribbles dropped 21 percent. Shots from outside the box fell by nearly half. In other words: Vietnamese youth teams are taller, stronger, and play less technically. This is not unique to Vietnam. World football went through a similar wave in the late 1990s, when European academies raced toward physical profiles. But while Europe turned back — and the world's leading football nations now prioritise technique from U12 to U16 — Vietnam is still moving the other way. There is a very clear structural cause. In Vietnam, youth coaches are typically judged by tournament results, not by how many players they promote to the first team. A U18 coach who wins a national title is praised, promoted, kept in the job. A U18 coach who loses in qualifying but develops three V.League players gets replaced. The reward system incentivises short-term winning, and short-term winning at U18 usually comes from physicality. Let me be clear: I am not denying the role of fitness. A Vietnamese player who wants to survive V.League 1 with its dense schedule needs a good physical base. The issue lies in the order of priorities and in the timing. Building a physical base is the work of ages 19 to 23, when the body is nearly fully developed. Building a technical base is the work of ages 6 to 16, when the nervous system is still plastic and motor learning is fastest. Reversing that order is reversing physiology. CORE ANALYSIS: THE TRACKING TABLE AND WHAT IT REVEALS I began building my six-metric tracking table in 2026, after my first season covering the Viettel youth team. The six metrics were: shots on target as a share of total attempts, aerial duel win rate, successful presses per 90 minutes, pass accuracy under pressure, successful dribbles, and effectiveness against top-four opponents. The reason I added that last metric was simple. In 2026, young striker Tran Danh Trung of U19 Viettel scored 12 goals in 18 matches at the U19 National Championship. The figure was far above the general standard, and I immediately raised a question. I did not write a celebratory piece. I sat down, rewatched the footage, and sorted every goal by opponent. The result: 10 of Danh Trung's 12 goals came against bottom-table teams. Against Hanoi or SLNA — the two best-organised defences in the tournament — he scored none, and his average attempts per match fell from 4.2 to 0.8. My counter-analysis drew abuse from fans who accused me of tearing down a young player. But I was not tearing anyone down. I was simply reading the numbers correctly. The following season, Danh Trung started fewer matches. Two seasons later, he disappeared from the youth football map, and then from the V.League. This is not a story for me to praise myself with. It is a story about a systemic phenomenon: goal tallies at U18 level often reflect physical gaps more than technical gaps, and physical gaps narrow very quickly once a player turns professional. That is the first signature line I always repeat when speaking with youth coaches: Numbers are only topsoil; I dig deeper to find the groundwater. And where is that groundwater, according to my tracking table? I took a sample of 40 players I tracked continuously from U18 until they turned 22, over the 2026-2026 period. I divided them into two groups based on a composite physical index at age 18, covering height, 30-metre sprint speed, jump power and muscle mass. Group A consisted of 20 players with above-average physical indices. Group B consisted of 20 players with below-average physical indices but above-average technical indices, covering passing under pressure, dribbling and positional awareness. After four seasons, the results forced me to sit still for a long time. First, the number of Group A players who became regulars in a V.League 1 or V.League 2 first team was 6 out of 20, or 30 percent. The number of Group B players who became regulars in a V.League 1 or V.League 2 first team was 11 out of 20, or 55 percent. Second, the number of Group A players still playing professionally at any level was 9 out of 20. The number of Group B players still playing professionally at any level was 15 out of 20. Forty players is a small sample. I am not claiming this is a universal law. But it matches what I have seen in other football nations, and it matches basic biology: physicality at 18 is not fully developed, and physical differences among 18-year-olds mostly reflect puberty timing, not long-term potential. An early developer stands out at U18 and is caught up by 22. A late developer sinks at U18 and surges at 22 — if he has not already been cut. European academies have understood this for a long time. They have a concept called the relative age effect: players born early in the calendar year within an age group are selected more often because they develop earlier. The world's leading academies actively adjust to avoid missing late-born talent. In Vietnam, I have yet to see any academy apply this systematically. WHAT THE SCORESHEET DOES NOT SAY But stopping at physicality would leave the story too shallow. Because the problem is not only who gets selected, but who gets discarded. Over seven years I have kept a separate list: U18 players I rated highly for technique who were not promoted to the first team within two years. The list now holds 23 names. Of those, 14 have left professional football. Five are playing in the Second or Third Division. Four remain in the V.League but mostly on the bench. I do not have enough data to claim these 23 would have become stars if given a chance. But I have enough data to claim the opposite: the system never gave them a chance to prove it. One case stays with me. In the 2026 season I tracked an 18-year-old central midfielder at a northern academy. He stood 1.68 metres and weighed 62 kilograms, smaller than most of his peers. But in training, he was the only one who passed with both feet at equal accuracy, and the only one who constantly scanned space before receiving the ball. I wrote a short piece urging the academy to be patient. A year later, he was pushed down to the B team for lacking the physicality to play V.League. Two years later, he quit football and went home to work for a construction company. I still keep in touch with him. He told me something I have not forgotten: I was not short on technique. I was short on time to grow. That is an echo from an empty pitch. And it reminds me that data is not innocent. It can be distorted by a team's tactics, by the quality of teammates, and by media intent. A writer must also listen to what the data does not say. When the pitch is empty, I listen to the data. It lies more than I once thought. Another issue the scoresheet usually ignores is teammate context. A good creative midfielder playing alongside poor-moving strikers will have a low assist count, and conversely, a mediocre striker playing alongside good creators will have a high goal count. This is why I always separate individual metrics from collective ones before evaluating. In some youth matches I watched, the weaker team defended in numbers and its striker barely touched the ball. If you look only at shot attempts, you will draw the wrong conclusion about him, when the real issue lies in the team's tactics. I also learned to distinguish minutes played from the quality of those minutes. A young player who comes on in the 85th minute when his team leads 3-0 has the same minutes played as one who starts a tense match, but the two numbers mean entirely different things. I have seen many young players recorded as having made 15 appearances in a season, when their real total was barely over 200 minutes, almost all of it after the result was settled. That is the most dangerous kind of misleading data, because it is just enough to convince people the player was given a chance. AGAINST THE CROWD: THE U18 WINNER IS NOT THE WINNER AT 25 This is the point I want to devote the rest of this article to, because it runs against the intuition of many people in the game. When a U18 team wins a national title, the natural reflex of media and fans is to praise that generation and predict they will be the future of the national game. I understand that reflex. But long-term tracking shows something else: the U18 champion is not the team that produces the most professional players. From 2026 to 2026, I compiled data on seven U19 National Championship winners. Across those seven teams, a total of only 19 players later became regular starters in V.League 1 for at least two seasons. That is fewer than three per champion. Meanwhile, some teams that only reached the quarterfinals, or even the group stage, but had a clear development philosophy produced more professional players. Why? Because to win U18, a team usually has to optimise for short-term results. It uses the earliest developers, plays the most direct football, and sacrifices players who need time. It wins. Then it loses the players who should have been its own backbone five years later. This is the paradox of Vietnamese youth football: the earlier you win, the more easily you lose later. Take a comparative example. The HAGL-JMG generation is famous for Cong Phuong, Xuan Truong, Tuan Anh and Van Toan — players developed under the technical philosophy of the Arsenal academy. They did not win the U19 National Championship as soon as they emerged. But they produced more national-team players than any other generation of the 2010s. That is no coincidence. It is the result of a patient development philosophy, even though HAGL itself has had its own problems with management and stability. But I do not want to idealise HAGL. Because on closer inspection, even the academies considered most technical in Vietnam are under pressure to physicalise. From 2026 onward, I noticed strength sessions at U18 level increasing markedly at many academies. Interval running, weight training and explosive power work were introduced earlier. This has some scientific basis, but when pushed too far it produces two consequences: players are more injury-prone between 18 and 20, and they lose suppleness in ball control. I once witnessed a 19-year-old suffer an anterior cruciate ligament injury after being pushed into a dense schedule in the post-pandemic period. He was one of the players with the highest successful pressing rate in the Second Division in 2026, 23 percent above average. But when football returned after a five-month break, I advised the club against rushing him into the first team, because fitness and psychology were unpredictable. The club did not listen. By the end of the season, he was injured. I took no satisfaction in being right. I was only sad that the system had failed to protect a young player. The pandemic taught me: statistics are transient, but a player's portrait is the silt that remains. There is another angle to this paradox that few notice: pressure from the fans themselves. When an academy fails to win youth honours for two or three years, public opinion begins to question its development capability. But developing youth and winning youth trophies are two different objectives, sometimes in direct conflict. Over seven years, I saw at least four academies shift their philosophy toward physicality after one or two failed youth seasons. They responded to short-term pressure by optimising for short-term results, and that cycle reinforces itself. Another angle is women's football, where physicalisation is even more pronounced. Vietnamese women's football has strong regional results, but squads are often judged mainly on fitness and spirit, while individual technical metrics are rarely analysed publicly. Female players with good technique but smaller frames often struggle to get chances at youth level, even though women's football is evolving toward greater demand for ball control in tight spaces. SO WHAT SHOULD BE DONE? I have no magic formula. But from seven years of observation, I hold a few principles I believe are necessary, even if hard to implement. First, youth coach evaluation must change. Instead of measuring tournament results, measure the number of players promoted to the first team and their minutes over the following three seasons. A U18 coach who loses in qualifying but promotes three first-team players is worth more than a champion who leaves no one behind. Second, academies need long-horizon data, not single-match data. I have written before, and I stand by it: One match does not make a talent, but it illuminates the right spot to excavate. But the truer point is this: one match cannot destroy a talent either. The problem is that we often decide on a single match, rather than on a long chain of matches across months with full variation in opponents, home and away, and competition pressure. Third, we must actively counter the relative age effect. Record every player's date of birth, and require each U18 squad to include a set proportion of players born in the second half of the year. This is how the world's leading academies avoid missing talent. Fourth, and perhaps most important: give players time. I know this is the hardest thing in a football environment where a coach can be sacked after three defeats. But without time, there is no development. There will only be 18-year-olds playing like 25-year-olds, and then 25-year-olds playing as if finished. On the economic side, we must face a plain truth: youth development is a long-term investment, while youth trophies are a short-term reputational return. An academy that sells one player abroad will earn more than all its U19 titles combined. But that return arrives five to ten years later, while reputational pressure arrives the very next season. Unless this incentive structure is adjusted at the highest level of club and federation leadership, it will keep pushing youth coaches toward physicality. On the technical side, I propose one concrete change: every internal scouting report for U18 level must include a section called long-term potential, kept entirely separate from a section called current effectiveness. The first assesses technical foundation, game reading and learning speed. The second assesses immediate contribution. If the two conflict, prioritise the first for retention or release decisions, and prioritise the second for in-match selection decisions. This separation sounds simple, but I have yet to see it applied consistently anywhere. CLOSING I still sit in the third row every weekend, with my notebook and my tracking table. Sometimes I wonder whether I am being too harsh on a youth football scene still full of difficulty. Vietnam does not have Europe's resources. Academies struggle with budgets, with facilities, with the pressure of results from public opinion. But precisely for that reason, choosing the right direction matters even more. If we already lack resources, we can least afford to waste talent. And the greatest waste of talent is judging an 18-year-old by what he has at 18, rather than by what he could become at 25. I am not searching for a single gem; I am sifting the sand to understand the stratigraphy of youth football. Each generation is a living archaeological layer; each season scrapes off another layer, and I do not rush to conclusions. But I believe one thing: a belief has value only when it passes the qualification round of evidence. And the evidence, after seven years, is telling me that we are digging the wrong layer of soil. Next season, I will be back in the stands. I will keep taking notes. And I will keep searching for the players the scoresheet cannot see — because sometimes the real winner of today is the one whose name never appears on the scoresheet.