Which Yardstick for a Vietnamese Fight? Lessons from Empty Data Cells

There is a sound I always hear before any fight begins, and it does not come from the stands. It is the sound of a fighter's heel settling onto the mat — a small, dry tap, almost swallowed by the entrance music. After more than thirty years standing beside rings and running tracks, I have learned that tap is more honest than the scorecards published twelve minutes later. A heel that grips means a lead foot that holds. A lead foot that holds means the rear kick has leverage. A rear kick with leverage means points.

This week, in a working session in Saigon, I was handed a folder about martial arts. I opened my spreadsheet out of habit, rested two fingers on the keys, and waited. There was nothing to type. The list of facts was empty. No fighter names. No competition date. No governing body. Not a single number. I sat still for a long while, and then understood the real subject of that session: an empty data cell is the most dangerous place in sports writing, because it always gets filled in with adjectives.

Context: a martial arts scene rich in fights, poor in data

Vietnam has enough material for ten books. Boxing, muay, wushu sanda, vovinam, taekwondo, karate, pencak silat, MMA. Each discipline has its own competition system, each system has its own scoring logic, and almost every discipline has produced Vietnamese fighters who reached the podium at the SEA Games or the Asian Games. Vovinam dates to 2026 and is tied to the name Nguyen Van Chieu; it remains the Vietnamese martial art with its own belt and competition structure. In muay, Nguyen Tran Duy Nhat has been the most frequently cited Vietnamese name for more than a decade, representing a generation that competed regionally and internationally.

Alongside that diversity sits a thin data infrastructure. Vietnamese football has data providers, per-match statistics, published passing and distance-covered metrics. Combat sports in Vietnam keep most of their data scattered across judges' notebooks, ring-side scorecards, and a few summary tables nobody updates once a tournament closes.

That shortfall does not come from a lack of movement. A three-minute sanda round is denser in movement than many things called data in professional sport. The problem is that nobody records it. A four-round national boxing title fight can generate hundreds of events: which jab landed, which hook found the ribs, who forced the corner in the third twenty-second stretch of round two. None of those events enter a system. By the next morning all that remains is a single line of result and a forty-second clip cut for social media.

In the current contract-signing cycle, the gap is more visible than ever. Deals in combat sports — a fighter changing gyms, changing coaches, signing with a commercial promotion — move through an uneven information flow: a few come with official announcements, most come with a group photo in a gym and one status update. Fans read rumours more than they read numbers, and that is precisely the environment in which empty data cells multiply fastest.

Choose the yardstick before you choose the winner

The most common mistake in writing about martial arts is not misnaming a technique. It is applying the wrong scoring logic to the wrong discipline. Forms and combat disciplines are two different worlds, separated by a gap in logic, not merely in technique.

A taolu routine is scored on difficulty value plus execution, after deductions for very small errors — half a point for a loss of balance, an off-angle arm, a pause in the wrong place. There, the gap between gold and silver is often about one tenth of a point. A taolu athlete has no concept of beating an opponent; they beat the scoring scale, on an afternoon when the only thing in front of them is the floor.

Sanda is the exact opposite. Points come from legal strikes to scoring areas, from knockdowns, from pushing an opponent off the platform. Boxing scores by round: ten points to the round winner, nine or eight to the other. MMA adds finishes, positional control and takedown counts.

Applying boxing's win-loss logic to a taolu routine produces sentences like this fighter has never lost to anyone — loud, and meaningless. Applying taolu's deduction logic to an MMA bout produces sentences like he lost a tenth of a point for an untidy landing — technical-sounding, and misplaced. Choosing the wrong yardstick produces systematically wrong conclusions, and the worst part is that those conclusions still read very smoothly.

I once lost nearly two weeks to that exact error. In 2026, while compiling data for a series on running tracks, I planned to apply an athletics speed matrix to several combat disciplines for a correlation comparison. I drew three charts, everything looked smooth, and then I stopped. The subjects were not comparable. A 1,500m runner has a single yardstick, time. A fighter has three overlapping yardsticks: legal strikes, position on the floor, and remaining stamina. Those three do not add up into one number. I scrapped the entire section and started over.

Three layers of verification

My method is not complicated. Every figure must pass three layers before publication. The first traces provenance: who recorded this, when, by eye or by device. The second recomputes independently: if a fighter landed forty-two strikes across four rounds, that is more than ten per round on average, and it must match the tempo I observed myself. The third cross-checks: judge one's scorecard against judge two's, then against slow-motion footage.

My rule: three layers of verification are not there to find the truth, but to calculate how many times the truth can be distorted and still survive.

In 2026, when international athletics shut down, I built an emergency workflow: split the postponed-events list among five contributors, each required to double-check before 2pm every day. One day a contributor filed a results table with a 0.02-second discrepancy in a Kenyan athlete's time. He said a gap that small could not matter. I had the whole file rewritten. In a 1,500m race, that gap is the gap between two medals. In a taolu routine, that gap is the difference between a final and an early flight home.

With combat sports the process is stricter still, because most of the data comes from human eyes. A scorecard has three slips, and the three slips rarely agree. The writer must state which slip he is reading, from which camera angle, at what moment. Data never shouts, but it will repeat itself until you are willing to listen.

Reading fatigue on the mat

The most interesting part of the job is not the strike count. It is the question I ask myself in every fight: who is hiding their fatigue out there.

Fatigue does not show on the face. It shows in small details cameras tend to skip. Guard height drops through round three — usually only three or four centimetres, but enough for the opponent's shot to find a path. The jab returns half a beat slower than in round one. The rear hand drops low on the entry step. The lead heel starts to lift off the mat on retreating steps, which means the fighter is preparing to withdraw rather than attack.

I count every running stride to find the person who does not want to run. In fighting, I count every retreat step to find the person who has run out of intention to advance. Nguyen Thi Oanh once lifted her pace by nearly one metre per second in the final lap of the 1,500m at the 2026 SEA Games, and that figure only means something next to her lap splits in the earlier rounds. A hard kick in round three means something only next to breathing in round one.

On the track I learned to look at the heel before the face. People see Modric passing the ball; I see him setting his heel into the grass like a screw. A player whose heel is planted does not sway, and a body that does not sway delivers the pass where it belongs. Fighters are the same. The hardest kick in a fight almost always comes from a planted heel, not from a flashy spin.

There is a category of metric I call the tank tyre. It never appears on a scorecard, nobody files it, nobody mentions it in the post-fight wrap. But it decides fights. For a fighter it might be seconds of clinch control, head-movement count before a strike, or the distance gained in escaping the corner. A tank tyre never stands out in a photograph, but it decides which swamp the vehicle gets through.

Eight dimensions for reading a Vietnamese fight

Once the yardstick is set, I break fight reading into eight dimensions. The first is technique, tactics and rules: stance, distance, changes of direction, which strikes count in which discipline. The second is condition and career age: a twenty-nine-year-old with twenty pro bouts has a very different curve from a twenty-two-year-old who has never cut weight more than five times.

The third is the organisational and event landscape. A fighter bound by an exclusive contract runs a different schedule from a free agent. Title fragmentation across promotions strips the word champion of absolute value: two people both call themselves champion, and both are right inside their own system.

The fourth is the business model. In Vietnamese combat sports money comes from four sources: state funding at national-team level, prize money, personal endorsement deals, and — increasingly — commercial promotions and streaming platforms. Revenue share for fighters at the lower tier is almost never published, and that is the largest gap in the whole industry.

The fifth is rules and compliance: judging, doping control, weigh-ins, discipline. The sixth is health and career risk — accumulated injury, knockdown count, extreme weight cutting, and the post-career stories of people who can no longer compete. The seventh is public narrative and market expectation: a fighter built by media into a symbol usually carries commercial value above competitive merit, and that gap always gets paid for at some point.

The eighth is transmission through the industry chain, from gyms and talent supply, through promoters, to broadcast, data, betting and consumers. A decision at the top — a scoring rule change, a round-count change, a change of promoter — flows downstream and alters how gyms teach new students about two to three years later. I have never seen a rule change at the organisational level that left no mark at the gym level.

What stands out is that in the folder I held this week, all eight dimensions were empty. Empty because the input data does not exist — not because those dimensions do not matter.

Unknown is not the same as neutral

This is the lesson I most want working journalists to remember. When data is missing, the writer's reflex is to drop into a neutral register: not much information yet, needs more time, everything is still open. That style sounds cautious, but it is dangerous in its own way. It turns ignorance into a fake equilibrium, and readers conclude both sides are level.

Reality is harsher: when the data is empty, the correct status of a judgement is unknown, not neutral. The two words are entirely different. Neutral is a conclusion. Unknown is a statement about the writer. Confusing them is the source of most worthless combat-sports analysis I have read over thirty years.

The contrarian angle: more numbers, more error

The industry is chasing one belief: more data means better analysis. I do not fully share it. In combat sports, the most countable data is usually the least important. Strike counts are countable because each is a discrete event with a clear beginning and end. But what decides most recent fights is harder to count: who controls tempo, who pins the opponent in a bad position, who is still lucid in the last thirty seconds of a round.

When an analyst holds thirty countable metrics, he writes thirty very confident paragraphs. And in fighting, confident error is the most common form of error. I have seen analyses based on strike counts declare a fighter to be ascending, while the footage showed he stopped moving in round two.

The same cluster of problems applies to video review. I object to its overuse in combat sports. A two-minute review does not merely cool down a good exchange. It tears the rhythm of the whole fight, saps the momentum of the fighter who is winning, and hands the one who is losing a rest the rules never designed for him. Some decisions must be made within thirty seconds, even when made wrongly, because being right but late costs more.

Closing: an empty cell is an invitation, not a verdict

In 2026 the stadiums closed and I learned something I have carried since. The empty stadium of 2026 was a laboratory: no crowd noise to hide in, and the truth became very bare. An empty folder works the same way. It says nothing about Vietnamese fighters. It says something about the writer.

If the next ten years bring Vietnamese combat sports more data — full scorecards, recorded movement metrics, more transparent contracts — my first question will not be who is stronger. I will ask: what more do we need to know in order to say anything at all? And what changes in how we see a fighter once what we see most is no longer the final kick, but the hundred footsteps that led to it?