One Label, Three Sports: The Data Gap in Vietnam's Combat Sports Records

One March evening I reopened my combat-sports archive — a file I started in 2026 and have pushed past four thousand rows. The first column holds the athlete's name. The second holds the discipline. The third holds the result. Row one thousand two hundred and eighty-four: a wushu athlete, 9.71 in jianshu. The next row: an MMA fighter, 12-1-0, a 78 percent finish rate. The third: a boxer, fourteen professional bouts, nine of them won on points.

Three rows. Three systems of logic. One column.

I did not build the file to rank anyone. I built it to check who was lying. Seven years on, the worst damage in it is not in the rows I filled. It is in the columns I had to leave empty, because nobody publishes them.

And in a professional habit: a great deal of Vietnamese sports coverage reads those empty columns as a clean line.

One label swallows three sports

In the content systems of most Vietnamese sports newsrooms there is exactly one tag: martial arts. Under that tag sit Duong Thuy Vi's jianshu routine, Nguyen Thi Tam's ticket to the Tokyo 2026 Olympics, Truong Dinh Hoang's WBO Asia Pacific belt, the pencak silat bouts at the SEA Games, the vovinam world championships, and the fight nights of domestic MMA promotions.

The merge has an operational logic. Vietnamese sports desks are thin. One editor may cover football, tennis and martial arts in a single evening. A shared tag gets copy out fast, keeps the URL clean, keeps the piece inside its section. Nobody merges three different sports out of ignorance. They merge because they are short-staffed.

The price of a shared tag is a broken data structure. Wushu taolu, sanda and professional combat sports do not share an evaluation system. They do not share a definition of victory. They do not even share a definition of whether an athlete competed at all.

Once those three systems sit in one folder, comparison generates itself. And that comparison is always wrong.

A jianshu routine has no knockout rate

Under International Wushu Federation rules, a taolu routine is scored in two blocks: a difficulty score and a performance-quality score, added on a ten-point scale. There is no opponent on the other side of the floor. There is no weight class. There is no judge counting landed strikes. There is no extra round.

So in a taolu athlete's record, the fields for opponent, weight class, finish rate and strikes landed per minute are not blank for lack of sources. They are blank because they do not exist in the nature of the event.

Sanda is different, but different on its own terms. Sanda scores landed strikes, throws, and ring-outs. The weighting between those groups does not match professional kickboxing, even though the two look similar enough that audiences call both of them fighting.

Professional boxing and MMA use the ten-point must system. Each round, a judge decides who won and by how much, then records it as two integers. Three judges, three readings, and the final result is the average of those readings.

Four systems. Four definitions of good.

When a report says Vietnamese fighters won every bout on opening day, and folds three disciplines into one sentence, the reader has no way of knowing what that clean sweep was measured with. A 9.71 jianshu routine is not a victory. It is a score awarded by a panel, and it only means something beside other routines from the same session, on the same sheet, under the same criteria.

Over seven years of watching fights and routines from Manila to Ho Chi Minh City, I have had to rewrite most of a story more than once for a single reason: the reporter before me attached a combat metric to a discipline with no combat. That reporter did not create the error. The tag did.

An empty column is not a clean line

This is where the danger starts.

Weight cutting is the largest acute risk in combat sports. It does not belong to the long-term category, the kind that shows up after twenty years. It kills inside a few hours.

Two deaths are fully documented. In December 2026, ONE Championship fighter Yang Jian Bing died after a weight cut for an event in Manila. In 2026, Brazilian fighter Leandro Souza died after a weight cut for a Shooto event in Rio de Janeiro.

After those two cases, two major organisations took two different roads. ONE Championship introduced urine-specific-gravity hydration testing and same-day weigh-ins. The UFC moved to early morning weigh-ins on the day before competition from 2026, giving fighters more recovery time.

Two models. Two philosophies. Both leave a data trail: the weight, the timing of the weigh-in, the hydration result, the number of misses. Only from that trail can a risk map of a division be built.

At domestic martial arts events, that trail is generally not published. No weigh-in sheet. No weighing protocol. No medical suspension list. No hydration data. The column stays empty.

And here is the trap of every data system: an empty cell can carry two opposite meanings. One is that nothing happened. The other is that nobody wrote it down. Seen from the empty cell, the two are identical. Their consequences are not.

The floor is clean. The weigh-in room is not.

The rule I hold to in every piece: missing data must be reported as missing data, never as absent risk. A record with no weight figure is not the record of a safe athlete. It is the record of an untested one.

Money, contracts, and the things nobody publishes

Money is the most verifiable thing in professional sport, and the best-hidden thing in Asia.

In Nevada and California, each fighter's purse is published in the state athletic commission's file, usually within hours of the event. Across most of Asia, that figure does not exist publicly. No file, no payroll, nothing to cross-check.

Three years on the Tianhai case, all I needed was one bank statement. A single sheet listing three transfers was enough to reconstruct the whole structure of a dying club. Getting that sheet cost seven weeks and a source who had already resigned.

A normal contract runs to one page. A dirty contract comes with an annex.

In combat sports that annex usually sits in three places: the exclusivity clause, the termination clause, and the medical clause. None of the three is published, so none of the three can be analysed. Fans only see the effect: a fighter at the peak of a career vanishes from the rankings, and nobody explains it.

Even anti-doping data — the data with the strongest claim to being a public good — depends on a commercial contract. The UFC ended its agreement with USADA on 31 December 2026 and moved its testing programme to a different operator from 2026. The programme did not disappear. The data machinery changed hands.

The laboratory does not know the fighter's name. That is why I trust it. The laboratory also does not decide what gets published. The payer does.

The part the sceptics get right

I have to give this section to the other side, because they are partly right in a way that matters.

There is a current in fight analysis holding that this sport cannot be quantified and that every attempt at quantification is pseudo-science. That current cannot be dismissed in a sentence.

Significant strikes in MMA are counted live, at ringside, by a human being, with no replay verification. The definition of a significant strike is a convention, not a physical quantity. The ten-point must system compresses an entire round into two integers, and it amplifies one person's reading. A round in which one fighter dominates completely can still be scored 10-9, exactly like a round decided by a single exchange.

Which means that if combat-sports coverage chases football's data model, the result will be false precision. Numbers that look solid, presented neatly, measuring the wrong thing.

But there is a clear boundary between two families of data. Performance data — strike counts, accuracy, round scores — is weak, subjective and coder-dependent. Institutional data — weight, timing of weigh-in, weighing protocol, each judge's scorecard, purses, contract terms, number of doping tests — is strong, objective and cross-checkable.

The first family should be published with a warning attached. The second should be published by force.

And the second is the family being withheld in Vietnam.

Closing

A minimum disclosure standard for Vietnamese combat sports does not require much. Weight and weighing protocol. Every judge's scorecard, published within twenty-four hours. Results in a shared data structure, split by discipline. And a clear discipline tag, so that a 9.71 jianshu routine never again sits beside a 12-1-0 record.

Without those four things, all analysis of Vietnamese martial arts is a reshuffling of empty cells.

And one question I leave with the people running the events: if a sport will not publish its own weigh-in figures, who exactly is being protected?