The Ring Without a Notebook: Vietnam's Martial Arts Data Gap

A Saturday evening in Thanh Khe district, Da Nang. On the mat, two sanda fighters step into the third round of a sparring bout. Below the mat, some forty people sit watching, phones raised to record. I sit in the back row, open my coding notebook, and log every exchange, every second of recovery, every glove touch. When the referee raises a hand to declare the winner, I realize I am the only person in the room holding a pen. No one counted the strikes that landed. No one recorded the defensive rate. No one marked the moment a fighter began to fade. The crowd claps, the fighters bow, and every number from three rounds vanishes with the gym lights. The bout ends, but the data does not — if anyone had chosen to keep it. After more than a decade watching martial arts, I see a stubborn paradox. Vietnam holds one of Southeast Asia's most diverse martial arts scenes: vovinam, sanda, boxing, Muay Thai, taekwondo, karate, and more recently semi-professional MMA gyms sprouting across major cities. Every province has a few gyms running steady sessions. Youth tournaments, national championships, and open events run year-round. Yet when I look for data to read a fighter, the only thing I usually have is a win-loss record. No style profile, no injury trend, no weight history across seasons. Vietnam's sports press is good at reporting results. We describe who won, with what strike, at which second. Most of what happens before the decisive moment is left on the mat. In 2026, when the pandemic stalled every competition, I spent eight months building a database of 242 football matches, coding every goal and every substitution minute. It let me prove that a team's optimal lineup had never played a full match together. For martial arts, we do not even have a comparable database. What troubles me most is how the seriousness of the data fails to match the seriousness of the athletes. A young fighter in Da Nang trains six sessions a week, eats to a plan, sleeps enough, checks weight every morning. They live like a professional athlete. But when they walk out of the gym, no one records that journey. The asymmetry between effort and recognition drives many to quit, not because they are weak, but because they never see themselves counted. If a bout is a book, we have only read the cover. Behind the result lies a string of information never recorded: the accuracy of each strike, the defensive rate, the pace of exchanges per minute, the moment a fighter starts losing balance. Someone who lands forty percent of strikes is entirely different from someone landing twenty-two percent on the same number thrown, but the scorecard never shows that difference. People remember the finishing blow. I remember what led to the finishing blow. Beneath the technical layer is the physical one. At what age does a fighter begin to decline? How many kilos do they cut each time they compete? A bout can carry a silent chain of injuries that no one counts, because no body in Vietnam tracks injury cases by season. I have spoken with people carrying mild brain injuries they did not know about, because no record exists of how many head strikes they absorbed across a career. Without data, we cannot tell a fighter resting from a fighter recovering. Then comes the organizational layer. Vietnamese martial arts run on federations, associations, and privately organized open events. That system stays close to the community, but it scatters data. A fighter competing in three events has three fragmented files, if any. No one aggregates them to see progress or decline. In developed martial arts scenes, every fighter is a living file, updated bout by bout. The difference is not talent; it is the record-keeping system. The business layer is the same. Sponsorship money, prize money, broadcast rights decide a fighter's livelihood, yet they are almost never made public. A discipline that wants to grow needs to know where money flows, and whether its athletes can live on the craft. Avoiding that question leaves young fighters without a model to follow. When a discipline will not talk about money, it quietly teaches the next generation that pursuing a passion means accepting poverty. Rules and judging are where data matters most, and where it is most neglected. Scoring decides who wins, but scoring criteria often shift by event, by organizer, and are rarely published in full. When criteria are unclear, disputes erupt, and disputes erode trust. Numbers do not lie; we simply have not asked the right question. Health and career safety is the last layer, and the most sensitive. A mature martial arts scene must measure injury cases, hospitalizations, recovery rates. In Vietnam, those numbers barely exist. The price is not paid on the scorecard but on the athlete's body, and it usually surfaces only when it is too late. Behind it all is a transmission chain few stop to see. Gyms train fighters, events create a stage, television and digital platforms carry images to the public, and the public returns to feed the gyms. That chain runs smoothly only when each link has data to judge itself. When one link breaks, the whole chain slows, and no one knows why. That is the silent cost of not keeping records. There is an outside misunderstanding I have met many times talking with people beyond the industry. Many assume traditional martial arts and modern combat sports are two separate worlds: one belonging to culture and philosophy, the other to sport and winning. That separation exists on paper, but not on the training mat. Plenty of traditional gyms in Da Nang still spar weekly, still count strikes, still score internally. They simply do not call it data. Others assume martial arts lie beyond measurement, that they belong to spirit and beauty that cannot be counted. I understand the feeling. But when a discipline invokes "immeasurability" to avoid scrutiny, it is no longer philosophy but a shield. A good martial arts teacher always knows where a student is strong, where they are weak, and how much they improved in three months. They have measured all along; they just have not written it down. More worrying is how we read achievement. When a fighter wins repeatedly, the media cheers. When a fighter loses, we turn away. But data does not run on that emotion. A win streak can hide declining form. A losing streak can hide technical progress. Before asking who won, ask who kept discipline. I still remember a case that forced me to retract my own judgment. I once wrote that a young fighter was finished after two straight losses. Six months later, with more data on a lingering shoulder injury, I understood those losses came while he had only one healthy arm. I was wrong, and the error came from reading results instead of reading the person. Since then I have set myself a rule: never conclude about a fighter before I have at least three sources of data. Vietnam's martial arts scene lacks neither talent nor passion. What it lacks is the habit of writing things down. If every gym kept a notebook, every event published a data sheet, every journalist carried a coding notebook, then in a few years we would have what we lack today: a martial arts scene that can be read. Every season is a chapter, and the ones holding the bookmark for it must be us.