Blank Medical Files in Vietnamese Combat Sports: When 'Not Screened' Is Read as 'No Risk'

On page 214 of the notebook I have carried through seven seasons, there is a column that appears nowhere else: the gap between a fighter's official weigh-in and the test weigh-in three days earlier. Last season, at a professional combat event in Ho Chi Minh City, I logged 41 rows. Not one of them made it into a news report. The on-screen graphic shows only the final number, after the fighter has stepped off the scale and pulled on a shirt. The rest sits in my notebook. That is why this article opens with an empty column rather than a fight.

Vietnamese combat sports are in their fastest growth phase in two decades. Lion Championship has expanded its calendar. Professional boxing promotions in Hanoi and Ho Chi Minh City run events more regularly. The muay thai and competitive vovinam movements add thousands of new athletes every year. Nguyen Tran Duy Nhat, Truong Dinh Hoang and the generation behind them appear constantly in regional press. In Bangkok, where I live, Vietnamese fighters competing in ONE Championship are the topic my Thai colleagues ask about most.

The data infrastructure of that sport has not grown at the same rate as the event calendar. Official weigh-in numbers are published. Fight minutes, strikes absorbed, injury history, return-to-play intervals after concussion are not. When one dimension of data goes silent, readers default to the most favourable assumption.

In Vietnam, vovinam has two branches that cannot be scored with the same ruler: forms and sparring. Forms are judged on movement difficulty and execution quality. Sparring is judged on legal strikes and control. Muay Thai in Thailand is scored on offensive effectiveness plus forward pressure. Professional boxing uses the 10-point must system. Kickboxing under K-1 or Glory rules scores on entirely different criteria. Sanda permits throws and grappling, which restructures the risk profile against boxing.

Comparing a vovinam forms athlete's record with a professional boxer's record is a meaningless exercise. Applying win-loss logic to a forms event, or difficulty-score logic to a boxing card, produces systematically wrong conclusions. The error lies in the type of data, not the quantity of it.

Weight cutting sits on another layer entirely. Losing 3 to 5 percent of body mass in the final 24 hours is the zone sports medicine classifies as dangerous for kidneys and heart. Nobody publishes how much a fighter cut. Nobody publishes how many cases of dehydration collapse followed a weigh-in. What gets published is the scale reading, after everything is finished. Numbers do not lie. People pick the numbers that lie for them.

Brain health sits deeper still. Four variables screen for CTE risk: total strikes absorbed, knockout count, sparring intensity, and the interval between concussions. None of them exist in the public record of Vietnamese or Thai fighters. World Cup 2026 taught me to keep data like keeping an oath: so I do not forget, not so I can show off. Keeping data only means something when there is data to keep.

The transmission chain closes the remaining gaps. Data travels from the gym to the promoter, to the broadcaster, to the audience. Every link has an incentive to drop one layer of information. Promoters need fighters who look healthy. Broadcasters need sellable knockout footage. Audiences need a story more gripping than a figure. No link has an incentive to publish weight-cut gaps, post-concussion recovery windows, or total strikes absorbed in a training camp. That is the whole mechanism: the information is not concealed, it is simply never produced.

The standard read in regional combat sports media runs like this: no injury news means no injury; no weight-cut news means safe weight cutting; no concussion news means stable brain health.

All three are wrong in the same way. They convert the absence of data into the presence of safety. When a screening process has not been performed, the correct status is not screened. The two states differ in nature, and they differ in consequence.

I have watched that reading used as reassurance. After each event, regional reports measure a fight by knockout count, not by strikes absorbed. The variables that predict skill more reliably, such as significant strikes landed per minute, strikes absorbed per minute, and the ratio of finish wins to decision wins, are almost never cited. For prediction, decision-win rate says more than total wins. For medicine, strikes absorbed per minute says more than title count.

The crowd does not ask for medical files. This profession is not permitted to let the crowd set the data standard.

Football does not live on the scoreboard. It lives in the empty chair in the corner of the dressing room. Combat sports are the same. The honours board does not hold that story. The columns in my notebook do: weight-cut gap, recovery days, strikes absorbed.

The signal I am waiting for lies elsewhere: the first promoter in Vietnam to publish three-day weight-cut gaps and post-concussion stand-down periods for its own fighters. Whoever does it will pay a short-term media price. Whoever does not will also pay a price, a longer-term one, and that bill does not appear on the scale.