Asian Combat Sports and the Data Gap: Reading a Fight by What Nobody Publishes

Three judges step onto the ring, scorecards in hand. The announcer lifts the microphone and calls out a name with the phrase 'wins by decision.' The arena splits in two: half cheering, half jeering. I am in the seventh row, opening my notebook, and on that page I manage exactly one line: no detailed scorecard, no names of the three judges in any post-fight release, no photograph of the slips. I have recorded this scene many times over five years covering combat sports events staged in Vietnam, at varying degrees. Sometimes the promoter published the overall result but withheld the round-by-round scores. Sometimes the judges' names were released but not their credentials or the country that licensed them. Sometimes nothing was released at all, and three days later the argument on social media simply dissolved because there was no longer any material to argue over. What stands out is that most disputes in the ring do not originate from a referee's error. They originate from the absence of data. When nobody can see the scorecard, people are forced to trust their own memory, and the memory of a spectator, like anyone's memory, always favours the side they were cheering for. To understand why that gap exists, you have to look at the structure of Asia's combat-sports ecosystem. It is a landscape of parallel rule systems, each with its own scoring scale, penalty regime, and level of disclosure. Professional boxing revolves around four major sanctioning bodies: the WBA, WBC, IBF and WBO. Each maintains its own rankings, its own mandatory-defence rules, and its own practice for publishing scorecards. Some post the scorecards on their website hours after the bout; others leave the decision to the local promoter. Mixed martial arts has the UFC and PFL in the United States, ONE Championship in Singapore, Rizin in Japan, plus domestic circuits across Southeast Asia, including Vietnam's mix of amateur and semi-professional promotions. Muay Thai has two historic Bangkok stadiums, Rajadamnern and Lumpinee, with a scoring system built on control and effectiveness of strikes, quite different from boxing's criteria. Kickboxing has Glory in Europe and K-1 in Japan. Sanda sits inside the wushu system, while Vietnam also has vovinam, traditional wrestling, and the amateur boxing structure tied to the SEA Games, Asian Games and the Olympics. What all these systems share is data. A single professional bout can generate hundreds of data points: strikes thrown, strikes landed, takedowns, control time, weigh-in recovery, medical suspensions, contract length, revenue-share percentages. The question is not whether the data exists. The question is who is allowed to see it, and when. In Japan, where I was born and have followed combat sports since childhood, disclosure has become habit: scorecards taped up in the arena corridor, judges' names printed in the programme, gyms keeping monthly fitness records. When I moved to Vietnam to work, I realised I had carried over a wrong assumption, that those things were the default. They are not the default. They are the product of institutionalisation that took decades, and everywhere it has moved at a different speed. When the metrics do not exist, technical analysis is only guesswork In professional MMA, people are used to SLpM (significant strikes landed per minute), SApM (significant strikes absorbed per minute), takedown accuracy and control time. These are the numbers that let you compare two fighters before they meet and reassess them afterwards. At many events in Southeast Asia, that set of metrics simply does not exist. Nobody collects it, or someone collects it but does not publish it, or it is published without any consistent standard that would allow comparison across promotions. The first consequence is that style-matchup analysis loses its foundation. To argue that a good wrestler will neutralise a good defensive striker, I need the first fighter's takedown success rate and the second fighter's takedown defence rate. Without those two numbers, any claim is just an impression dressed up in language more certain than the evidence allows. The second consequence is more serious: win-loss record becomes the only metric, and that metric is distorted by opponent quality. I once built a file on a fighter with a perfect seven-and-zero record. Tracing the records of the seven men he had beaten, their combined tally was two wins and fifteen losses. A record like that says nothing about technical ability. It says something about how a promoter builds an image. In a file I compiled on more than forty fighters competing at domestic and regional events, the majority had opponents whose combined records sat well below .500. That does not make them bad fighters. It means their record, as a document, is not sufficient to support any conclusion. I learned to read data from a very small failure. In 2026, on my commentary debut, I mispronounced a player's name three times in a single half. The editor gave me blunt feedback. I did not argue, I wrote it in my notebook. The following month I spent all my free time rewatching footage, logging every name and every shirt number until I knew them by heart. That habit followed me from football into combat sports: before every event I build my own data table, and every sentence in the piece has to trace back to a cell in that table. The first mistake is not there to be forgotten, it is there to serve as a benchmark. The scale and the life cycle of a fighter At the weight class, data is missing exactly where it is most dangerous. Professional boxing and MMA usually weigh fighters in the day before, giving them roughly twenty-four hours to rehydrate. That window allows a fighter to regain part of the mass lost, and the gap between the official weight and the fighting weight can reach several percentage points of body mass. At many amateur and semi-professional events in the region, weigh-in and competition happen on the same day, or hours apart. The difference in weigh-in rules creates two different sports sharing one name. A fighter who tolerates dehydration well has an edge under an early weigh-in format. A fighter who recovers quickly has an edge under a late one. If I do not know which format applies, every judgement about conditioning is meaningless. The second missing data set is the medical suspension. Major organisations publish lists of fighters suspended after knockout losses, with specific durations. That list is a public document, searchable, and it protects both the fighter and the promotion's credibility. At many regional events, this information does not exist in written form. It exists as hearsay. Sitting in the press row once, I asked a promoter about the post-knockout suspension rule. The answer was that a rule existed but it was not convenient to publish. A rule that is not published cannot be checked, and a rule that cannot be checked cannot be fully enforced. Referees do not create errors; they only record what the rules already contain. Contract barriers and the fragmentation of belts At the organisational level, the problem shifts from medical data to contract data. Exclusive contracts keep a fighter inside a single system, which allows a promotion to build a long-term narrative but also blocks the bouts fans want to see. Fragmentation at the championship level in boxing produces a situation where one weight class has four champions, and unification depends on commercial negotiation rather than sporting ranking. For a writer, the consequence is that rankings stop being an absolute scale. They become a relative scale that depends on which organisation a fighter belongs to. To compare two men in two different systems, I have to build a conversion table, and that table always carries an error margin. Acknowledging the error margin is part of the job, not a weakness of it. In Vietnam, most professional fighters sign short contracts or compete event by event. That creates a flexible labour market, but it also creates a situation where nobody carries long-term responsibility for a fighter's health. When a fighter retires, no database records how many bouts he went through, how many times he was knocked down, or how many times he cut weight excessively. Where the money flows Revenue for a combat-sports event comes from four main sources: live tickets and comps, broadcast rights, sponsorship, and merchandise. At major promotions, broadcast and pay-per-view revenue dominate. At regional promotions, sponsorship and ticket sales dominate, while broadcast rights are often traded for exposure rather than cash. The revenue split between promotion and fighter has been the industry's biggest dispute over the past decade. Public litigation documents in the United States have produced figures on the share of revenue flowing to athletes, and those figures sit well below major team sports. That is a citable, checkable fact worth discussing. It is entirely different from an unsupported complaint. In Southeast Asia the issue sits elsewhere. Fighters are paid per bout, usually announced as a single figure with no other components: no broadcast share, no pre-defined performance bonus, no insurance. A single figure is not a salary. It is a payment, and it does not tell you what the worker earns in a year. Rules only count when they are published The most common scoring system in boxing and MMA is the ten-point must system, in which a round is awarded to one side with the higher score, usually ten to nine. Criteria include effective striking, aggression, control and defence. The priority order of those criteria differs between systems, and that difference is what generates disputes. Some organisations apply review procedures comparable to video assistant referees in football. But unlike football, where the process has been standardised into describable steps that can be explained to spectators, in combat sports the review is usually conducted behind closed doors, with no public notice of which incidents were reviewed and what came out of it. I believe this is the biggest and also the easiest gap to close. Publishing detailed scorecards, judges' identities and review minutes requires no advanced technology and no large budget. It requires an administrative decision. In Japan, a small kickboxing card can still have its scorecard posted publicly afterwards. That is an operating standard, not a budget standard. Health: the part left out of every contract Occupational risk in combat sports is among the highest in sport. Traumatic brain injury from repetitive impact is the biggest long-term risk, and it does not show up immediately after a bout. Research on professional boxers has documented a link between cumulative rounds fought and later neurological decline. Data on cumulative rounds is the simplest data any organisation could store. It needs no specialised medical equipment. It needs a spreadsheet and a mandatory updating rule. I have never seen such a public database at any regional promotion I have covered. In a conversation with a gym coach in Hanoi, he told me the problem was not a lack of concern, it was a lack of time and people. Small gyms, fighters competing across different promotions, records living in the coach's memory. That way of working used to suit the scale of a grassroots scene. As the scale grows, it becomes a weak point. Media and the life cycle of a story Combat-sports media runs on expectation cycles. A fighter wins a few in a row and a story is built: undefeated, overcoming hardship, quitting another career to chase a dream. That story has value if it is placed next to data on opponent quality. It becomes a risk if it stands alone. The underdog-upset narrative has special appeal because it gives viewers the sense that anyone can produce a shock result. That is true emotionally and true statistically to a degree. But only by following a fighter rated as an underdog across an entire season do I see the value of the unmentioned losses, of the dense scheduling needed to pay the bills, of the long trips made without a guaranteed contract. When a journalist only shows up for the biggest bout, they only see the tip of a story whose submerged bulk was decided years earlier. From gym to arena: the transmission chain A combat-sports industry runs on four links. Gyms and talent pipelines are the first, where athletes are produced. Event promoters are the second, where athletes become a sellable product. Media and broadcast platforms are the third, where that product reaches audiences. And finally the consumer market of tickets, merchandise, digital content and related services. Among those four links, legal sports betting in Vietnam remains very limited, which slows the flow of money back into the industry compared with markets where betting is tightly regulated and taxed. In those markets, bout data becomes a commodity with a price, and precisely because it has a price, people are forced to standardise it. Data standardisation, in many places, has not come from goodwill about reform. It has come from the operating needs of the betting market and of pay-television broadcasters. That produces a paradox: combat-sports organisations have an incentive to disclose data transparently when a third party demands it with money. Broadcast rights work like rules: whoever holds the clause controls reality. The crowd is not stupid, it has been stripped of its tools The common reaction among professional observers is to criticise fans as gullible, chasing glory, unwilling to do the research. I disagree with that framing. Looking back at the times I rejected a claim that had spread widely, I have always had to ask myself why it spread. The answer is almost always the same: it spread because fans had no means of verification, and humans default to believing what is repeated. That is a normal psychological mechanism, not a moral defect. When a fighter is introduced as undefeated, the fan does not hold the opponents' records. When a result is disputed, the fan does not hold the scorecard. When a fighter withdraws for health reasons, the fan does not hold the medical information. In all three situations, the fan is placed in a position of having to guess. Guessing wrong is not their fault. Equally, it has to be said plainly that sometimes the lack of transparency is used as a weapon. An organisation withholds scorecards because publishing them would expose inconsistency in judging. A fighter withholds an injury because disclosing it would weaken his negotiating position for the next bout. A promoter withholds purses because disclosing them would set a precedent for other fighters to demand more. Data is not missing at random. It is missing structurally, and someone always benefits from that structure. Data stays silent until someone asks the right question. The right question here is not who won, but who scored it, under which criteria, and why those criteria were not published to everyone at the same time. An empty pitch still keeps its rules; people simply see more clearly when the noise is gone. That was true of football when leagues paused, and it is true of combat sports: when the arena empties, what remains is rules, process and data. Those things do not disappear when the crowd leaves. They only become invisible because the noise was covering them. Verifiable conclusions, and recommendations that can actually be implemented Three things can be done immediately without a large budget. The first is publishing detailed scorecards along with judges' identities within twenty-four hours of every event, on the promoter's official channels. That is a purely administrative task, and it resolves most scoring disputes. The second is establishing a minimum national fighter registry recording number of bouts, number of knockout losses, and medical suspension periods. This registry does not need to hold full medical records, only the key fields sufficient for another promoter to know who they are putting on a card. The third is standardising disclosure of per-bout and per-contract pay, at minimum as a value range if the parties do not want to name exact figures. A labour market without price information will always tilt towards whoever pays. For a writer like me, the ethical consequence of these three proposals is clear. If the data is published, my work shifts from speculation to analysis. If the data stays locked away, I have only two honest options: write that I do not know, or write a list of questions addressed to those responsible for answering. Both are less attractive than an emotionally rich commentary piece, and both are more accurate. In five years working in Vietnam I have been wrong many times. Those errors were not erased from the notebook. They sit in the left-hand column, next to the blank cells, and every time I open it I see them there, reminding me that a conclusion not verified twice is not yet a conclusion. If promotions in the region accept a minimum level of disclosure, the first beneficiary is not the journalist. The first beneficiary is the fighter, who will have a professional record sufficient to protect himself after leaving the ring, and the next is the fan, who will finally have the tools not to have to guess.