Vietnamese Youth Football: When Data Replaces Emotion and Lessons from the Pitch

On an August afternoon at the PVF Youth Football Training Center, I sat watching Vietnam's U19 team practice. What caught my attention was not the technical ball handling or the beautiful long-range shots, but a small detail: the young players were being asked by their coach to record each of their passes in a small notebook. That was the moment I realized Vietnamese football is entering a new era – where data is beginning to replace emotion. The context of this change does not come from an administrative decision or a sponsorship contract. It comes from the failure of Vietnam's U23 team at the 32nd SEA Games, where we were eliminated in the semifinals by Indonesia in a match where our players showed a clear lack of attacking ideas. After that tournament, the Vietnam Football Federation (VFF) invited a group of data analysis experts from South Korea to work with the youth teams. They brought something Vietnamese football had never had: a full-pitch movement tracking system and pressing analysis software. In the first three months, these experts collected data from 47 matches of Vietnamese youth teams at various levels. The results were astonishing: the PPDA (pressing allowed per defensive action) index of Vietnam's U19 team averaged 14.2 – much higher than the standard of Korean youth teams (around 9.8) and Japanese teams (around 10.5). Simply put, our young players allow opponents to make too many passes before making a defensive action. They run a lot but not intelligently. This leads me to an important observation: Vietnamese youth football is obsessed with physical fitness while forgetting tactics. In the training sessions I observed, coaches often ask players to run more, increase physical fitness, but rarely teach them how to read the game. The result is that we create players who can run tirelessly but lack the ability to make the right decision in a third of a second. Numbers are just seasoning. People are the main dish – but the people here need to be taught how to think on the pitch. Look at the case of Nguyen Quoc Viet, a young striker considered the "darling" of the data analysis room at PVF. He has an impressive finishing record: 0.68 expected goals (xG) per match in the National U19 Championship – the highest in the tournament. But when I reviewed the footage, I realized that most of Viet's chances came from set pieces or fast counter-attacks, where he had plenty of space. When facing an organized defense, Viet often looked confused and lost the ball. This is a typical example of how data can deceive us if we don't look at the context. In a friendly match against Korea's U19 in June, I witnessed this again. Viet was positioned as the highest striker, but in the first 60 minutes, he only touched the ball 14 times – an extremely low number for a main striker. The problem is not Viet's finishing ability, but his movement to create space. He stood still too much, waiting for the ball to come instead of actively moving into dangerous positions. This is a skill that does not show up in statistics but determines the success or failure of a striker at the highest level. Interestingly, when I shared this observation with a Korean coach working at PVF, he nodded in agreement and said: "Vietnamese players are very hardworking, very eager, but they are not taught how to think on the pitch. They run after the ball instead of running to positions." This statement reminded me of a FIFA study on youth player development, which pointed out that developed football nations like Spain and Germany spend at least 40% of training time on tactical and decision-making exercises, while this figure in Vietnam is only about 15-20%. I am not saying that physical fitness is not important. In a 90-minute match with high intensity, physical fitness is an indispensable foundation. But the problem is that we are putting physical fitness above everything else, creating a generation of players who can run marathons but do not know how to control the tempo of a match. Look at how top Asian teams like Japan and Korea operate: they do not run more than us, but they run to the right places at the right time. They press not to chase the ball but to cut off the opponent's passing lanes. Another blind spot I noticed in Vietnamese youth football is the lack of consistency in training philosophy. Each generation of players is taught a different style of play, depending on the coach in charge. Some prefer defensive counter-attacking, some want ball possession, some prefer high pressing. The result is that young players never develop a clear playing identity. They become adaptable but not excellent at any aspect. I remember a training session of Vietnam's U17 team in May, where the head coach asked players to pass short, control the ball. Just a week later, in another session, an assistant coach asked them to play long balls over the top and attack directly. This contradiction confuses young players. They do not know which is the right way to play, and they develop the habit of passing safely backward instead of daring to try risky passes that could create opportunities. This leads me to a counter-intuitive perspective: perhaps we are too focused on results in youth tournaments while forgetting that the real purpose of youth football is player development. When a U15 team wins the national championship, we celebrate, but do we ask: how many players in that team will become professional players? How many will be good enough to play in the V-League? The reality is very few. So why do we sacrifice the technical and tactical development of players just to win a youth title? In a study I conducted with a colleague at the Ho Chi Minh City University of Physical Education and Sport, we followed 120 young players from 2026 to 2026. The results showed that only 12% of them continued to play football at a professional level after graduating from training academies. Of those, only 3% reached the level of regularly playing in the V-League. These numbers raise big questions about the effectiveness of the current youth training system. We are investing a lot of money and effort, but the output is too low. One of the core problems is that we do not have a scientific system for evaluating young players. Coaches often rely on intuition and experience rather than objective indicators. I have witnessed many cases where a player with good technique but small stature is overlooked, while a tall player with limited technique is favored. This reflects an old mindset: valuing physique over technique. But if we look at modern football, we will see that small players like Lionel Messi, Luka Modric, or Nguyen Quang Hai can all succeed if they have superior football intelligence and technique. I do not deny that there have been significant improvements in recent years. The emergence of academies like PVF, Nutifood JMG, or HAGL Arsenal JMG has created a more professional training environment. Young players now have access to better nutrition, better facilities, and more structured training programs. But there is still a large gap between what we are doing and what developed countries are doing. Look at how Japan builds youth football. They have a consistent philosophy from U12 to U23, applied nationwide. Every coach, whether at an elementary school or a professional academy, follows the same curriculum. They have a player evaluation system based on clear criteria, including technique, tactics, physical fitness, and mentality. And they are patient – they do not rush to conclusions about a player after just a few matches. In Vietnam, we are often too hasty. A player who scores in three consecutive matches in youth tournaments is immediately hailed as a "promising young talent." But if we look at long-term data, we will see that short-term form is not a good indicator of long-term development. A player can score many goals in youth tournaments because the opponents are weak, or because the system revolves around him. But when he moves up to the first team, where everything is faster, stronger, and smarter, he may not adapt. I remember the case of a young player who was highly rated in the U19 level, scoring 25 goals in one season. He was compared to "Vietnam's Messi" on football forums. But when promoted to the first team, he could not perform. After two struggling seasons, he had to move to a First Division team and gradually disappeared from the football scene. When I reviewed his footage from youth tournaments, I realized that most of his goals came from one-on-one situations with slow defenders or from corner kicks. He did not have the ability to read the game, did not know how to move to create space, and was not mentally strong enough to overcome pressure. This is why I believe we need a revolution in how we train youth football in Vietnam. Not a revolution in facilities or finances, but a revolution in mindset. We need to change how we view player development, how we evaluate talent, and how we build training philosophy. First, we need to build a unified training philosophy nationwide. This requires close cooperation between VFF, academies, clubs, and training centers. Every coach, from grassroots to professional level, needs to be trained to the same standard and follow the same curriculum. We cannot have a U15 team playing possession football while the U17 team plays defensive counter-attacking – that creates contradictions in player development. Second, we need to invest in coach education. A good coach is not just someone who knows how to arrange formations and set tactics. They need to understand sports psychology, how to develop decision-making skills, how to create a positive learning environment. In developed countries, youth coaches must undergo rigorous training and continuously update their knowledge. In Vietnam, many youth coaches still rely on personal experience and learning from predecessors without updating new methods. Third, we need to build a more scientific player evaluation system. Instead of relying only on intuition, we need to use objective indicators to assess player progress. This does not mean we completely abandon intuition – football is a complex sport that cannot be based solely on numbers. But we need to combine both: use data to identify strengths and weaknesses, and use intuition to assess hard-to-measure qualities like mentality, confidence, and leadership. Finally, we need to be more patient. The development of a football player is a long process, usually taking 10 to 15 years from starting to play to reaching the peak of a career. We cannot rush to conclude that an 18-year-old player will succeed or fail based on a few performances. We need to create an environment where young players can make mistakes, learn from those mistakes, and develop naturally. Vietnamese youth football is at an important crossroads. We can continue doing what we have done for many years – focusing on physical fitness, short-term results, and hoping for natural talents. Or we can change – building a modern training system based on data and tactics, and patiently waiting for results. I believe the choice is clear. But the question is: do we have the courage to change? Do we have the patience to wait? And are we smart enough to learn from those who came before us? On another afternoon at PVF, I saw a group of U15 players practicing a zonal pressing exercise. The Korean coach guided them on how to move in sync, how to push opponents into less dangerous areas, and how to coordinate to win the ball back. I saw the focus in their eyes, the eagerness when they understood something new. And I realized that, despite many challenges, Vietnamese youth football is heading in the right direction. We just need to be more patient, smarter, and braver in making changes. The Russian night was hot, and the only lesson that remained was silence. But in Vietnam, I hope we will not be silent. We will say what needs to be said, do what needs to be done, and build a brighter future for our national football. Because in the end, football is not just numbers on a statistics sheet. Football is people, dreams, and relentless efforts to reach for something better.