Vietnamese Combat Sports Run on Memory: The Data Void After Every Fight

The referee raised the red corner's hand, the arena burst open like a lid coming off a pot, and I stayed seated with a notebook on my knee. Four lines were written in it: strikes thrown, strikes landed, seconds controlling the centre, and times pushed to the ropes. Back at the guesthouse I reopened the footage at two in the morning and counted again. The blue corner threw 27 percent fewer strikes but landed 19 percent more, and took two of three rounds on the scorecards of three judges. Those scorecards were never published anywhere. No photograph, no PDF, not a single line on the organiser's page. A fighter who loses knows he lost, but not in which round, on which criterion, or what he must fix next time. Fans leave the hall with a feeling rather than with evidence. Based on my experience covering combat events in Vietnam over many years, from youth tournaments in Hai Phong to SEA Games editions, what bothers me most is not the technical level. It is that after every fight, almost nothing is kept. Data does not betray you; we simply place our trust in the wrong place. Vietnamese combat sports sit on at least three overlapping layers. The first holds traditional and semi-traditional disciplines: Vovinam, traditional martial arts, wushu, karate, taekwondo. The second covers combat sports inside the national and regional competition system: boxing, Muay Thai, kickboxing, pencak silat, wrestling. The third is the professional stage: MMA, professional boxing, professional kickboxing. All three share the same fighters, coaches and halls, and the same weakness: no open data archive. Football solved that problem long ago, though not out of a love of numbers. It was solved because broadcast rights and betting markets need figures to set prices. A single V.League match automatically generates thousands of data points: passes, distance covered, duel success rate. Vietnamese combat sports face no such pressure, so they built no such infrastructure. The result is a paradox: the most collision-heavy sport is the least measured. On 6 September 2026, ONE Championship held its first event in Vietnam at Phu Tho Stadium, Ho Chi Minh City. It was a milestone, and the promotion itself announced it as one. After that night, most detailed fight information remained inside foreign systems, in English, and was barely converted into Vietnamese material for local use. A young fighter in Nam Dinh who wants to learn from that card has to go hunting alone. In May 2026, when Vietnam hosted SEA Games 31, Vovinam was part of the official competition programme. It is a discipline tied to identity, with a large practitioner base, and it delivered a large haul of medals for the host delegation. But how Vovinam is scored, how technical faults are deducted, how a beautiful strike is separated from a textbook strike, exists mainly in the heads of referees and in internal training sessions. On the domestic professional layer, the Vietnam Mixed Martial Arts Federation operates LION Championship as a national-level event. It has fighters, contracts and media coverage. Yet if I want to check how many bouts a flyweight has fought in two years, and whether he won by submission or by judges' decision, I must piece it together from video, news articles and the memory of people in the industry. A professional sport does not run that way. The consequences reach further than people assume. A sponsor asks for a record and receives estimates. A coach wants to prove his athlete is improving and offers a feeling. A fighter wants to negotiate better terms and holds nothing but a story. Everything rests on personal reputation, and personal reputation cannot be verified. What survives and what evaporates after the bell List what remains after a combat bout in Vietnam. The result, as a win, loss or draw. The names of two fighters. A few photographs, a few short clips on social media. What evaporates is far longer. Each judge's scorecard, with round-by-round scoring. Strikes thrown and landed, split by body zone. Success rates for takedowns, throws and submissions. Control time. Fouls and their categories. Weigh-in records, including actual weight and the amount cut in the 24 hours before the bout. Pre-fight and post-fight medical results. Medical suspensions, if any. These are fields that any professional system worldwide has stored for decades. They are the minimum record that lets a sport hold itself to account. I once sat with a boxing coach in Hai Phong who had cornered his athletes for more than ten years. He recalled every bout, every opponent, every mistake. When I asked whether he kept the footage, he shook his head. Phones change, computers break, memory cards are lost. One man's memory is the only archive of an entire generation of fighters. In combat sports, Vietnam's biggest names usually come from a moment people remember. Nguyen Tran Duy Nhat is known as Vietnam's most familiar Muay Thai face on international stages, and his value lies in managing distance and breaking an opponent's rhythm. Nguyen Thi Tam made her mark in women's boxing as a Vietnamese fighter who qualified for the Tokyo 2026 Olympics. Duong Thuy Vi left behind a collection of medals in regional wushu. Yet anyone wanting to reconstruct their technique through data has almost nothing beyond video and audience memory. The five metrics I count myself, and the trap inside them Since I cannot wait for someone to finish building a database, I count on my own. My method uses five metrics, chosen on one principle: only what can be recounted and contested. The first is pace, measured as strikes thrown per minute. It shows whether a fighter controls the tempo or is dragged along by an opponent. The second is accuracy, landed strikes over strikes thrown, split by three zones: head, body, leg. The third is combination density, the average number of strikes inside a continuous sequence. The fourth is control time, counted in seconds spent holding the centre. The fifth is successful counter-attacks after being attacked first, which I consider the most important and least discussed metric. After three years of counting this way, one lesson stands out: raw data detached from the context of a fight is more dangerous than no data at all. A concrete example. A three-round bout at a national event. The red corner threw 412 strikes and landed 118. The blue corner threw 305 and landed 141. Read the totals alone and the red corner looks like the aggressor. Split by round, the red corner threw 189 strikes in round one, then dropped to 104 in round three. The blue corner moved the other way: 78, then 96, then 131. The blue corner's pace climbed while the red corner's collapsed. Two judges gave the blue corner the last two rounds, scoring control and clear effectiveness rather than volume. Within the rules, they were right. But a reader seeing only the summary will conclude the judges were biased, and the argument that follows will lead nowhere because nobody holds the numbers. That is the trap. A metric detached from the flow of a fight tells a false story, and the false story outlives the truth because it is simpler. Hearing through the eardrum Some things I learned by switching off the picture. During events held without spectators, I once tried calling a bout using sound alone, and that method taught me more about combat than watching a single exchange five times over. The sound of a foot pivoting on the mat before a low kick announces what is coming. A short intake of breath at the end of round two signals that conditioning is hitting its limit. A coach's shout from the corner changes tone between rounds two and three, and that shift usually precedes a tactical adjustment by seconds. The thud of a kick into the ribs is duller than a kick into the thigh, and the fighter who takes it almost always changes stance immediately afterwards. Hearing through the eardrum, I found something the statistics sheet never shows: most losses by Vietnamese fighters against foreign opponents come from the gap between rounds two and three, when the pace shifts suddenly and no adjustment follows. The opponent lifts the tempo, the Vietnamese fighter holds the old rhythm, and across sixty to ninety seconds the fight is decided. That is a measurable pattern. Measuring it requires someone counting, and counting requires an organisation to demand it. Numbers tell the story and the storyteller only needs to sit down and listen, but the chair only exists when the organiser sets it out. When a contract has nothing to cite At the professional level, the consequences of missing data are clearest at the negotiating table. A young fighter wins three bouts in a year. His manager has no way to prove he deserves a raise, because none of the three wins carries data. Compare him with another fighter who also won three, but has one clip that travelled online. The second man will be paid more. The criterion becomes social media reach rather than competitive quality. For fighters at the bottom, this is a livelihood problem rather than an academic one. They receive no state allowance like national team athletes, hold no sports medical insurance, and have no record to show a personal sponsor. Every bout that passes is a slice of a career evaporating without a trace. Seen from the other side, that same opacity creates a different business: the business of legend. A fighter with a good story gets booked more often than a fighter who fights well. That is not wrong in market terms, but it skews priorities inside the development system. When the arena is empty, the loudest applause belongs to yourself. Fighters training in silent halls, without spectators, cameras or scorecards, keep proving their worth to themselves. But a sport cannot be built on each individual's private sense of proof. It needs evidence that can be handed on. Faint light from sports that went first Vietnamese athletics faced exactly this problem. Only fifteen years ago, domestic results were barely archived systematically. When automatic timing gates and finish-line camera systems arrived, several things changed: results were shielded from dispute, athletes could compare themselves across seasons, and coaches had grounds to defend their programmes in public. On the track I can state exactly how many strides someone took over one hundred metres, and at which metre the performance was lost. In a three-round boxing bout, the equivalent is a three-strike combination landed in the second minute of round three. We can count both. We simply choose to count one. Combat sports hold an advantage athletics never had: every bout is a tactical conversation, and that conversation can be recorded. A bout with no stored data is a conversation with the tape erased. We keep the conclusion and throw away the entire argument. What should change, in order of priority The first step needs no expensive technology. It needs a rule: publish all three judges' scorecards within twenty-four hours of a bout, as a document or a photograph. The cost is close to zero. The value far exceeds it, because it moves disputes away from personal honesty and towards reading the criteria. The second step is standardising fighter records: a single identifier per person, linked to every bout of a career, including bouts at different events run by different federations. Without identifiers, every statistic fragments. The third step is counting strikes. But counting without publishing sends fans back to gut feeling, and the old loop continues. The reverse side of importing a yardstick Here I must argue against myself, because the temptation in this trade is strong: import the whole toolkit of international promotions and use it locally. The international MMA toolkit splits strikes into significant, knockdown and finishing. That split fits a sport where each round lasts three minutes and any single strike can end a bout. It is not technically neutral. When every metric revolves around landed strikes, techniques that produce no landed strike are undervalued even when they decide fights. Vietnamese fighters are strong at what is hard to count: managing distance, breaking an opponent's rhythm, working in short clinches, exploiting endurance. In Muay Thai, clinch pressure and knees are the primary weapons of many Vietnamese fighters. If the only yardstick is significant strikes landed, they will be judged weak, and coaches will train pupils towards scoring rather than towards winning. This is a mistake I made once in my career, and I say so because it is more useful than keeping quiet. For a period I assessed fighters almost entirely by landed-strike percentage, and I underrated several of them, which forced me to rewrite my assessments after reviewing their full body of work. Against the light you can still see clearly, and that is when you know you are standing in the right place. That light, in data work, is reviewing an entire sequence of bouts rather than one good clip. Another counter-intuitive point concerns money. The medal-rich disciplines at regional level, such as Vovinam or wushu, are precisely those with less transparent scoring than boxing. Boxing has three judges and a clear scale. Vovinam has many technical criteria, many deductions, and much that rests on a referee's subjective reading. The heaviest investment flows into the hardest discipline to verify. That is a policy choice with a rationale: regional medals are easier to win than Olympic medals. The price is a measurement system that weakens over time. There is a common misunderstanding about data I encounter constantly. Many people believe the purpose is to determine a more objective winner. Its real purpose is to make arguments concrete, so that people argue about criteria rather than about honour. A mature sport is not one without disputes. It is one that knows what it is disputing. One more concern outweighs the missing data itself: tacit knowledge is fading. Senior coaches in Hai Phong, Nam Dinh and Ho Chi Minh City carry tactical patterns in their heads that no document records. When they step away, those patterns leave with them. Building a database is not only for today's audience; it is for preserving what the next generation will no longer be able to ask about. The cheapest first move any Vietnamese combat sports organiser can make next season is to publish scorecards, with a Vietnamese-language description of the scoring criteria, within a day of each bout. No software, no technology sponsor, no conference. If that is done consistently for three years, we will hold something nobody currently has: an archive of disputes that can be looked up. And once a martial arts scene knows what it argued about in the past, it will know what it must practise for the future. Vietnamese fans deserve to revisit a fight through numbers, not only through the memory of a coach who retired long ago.