Vietnamese Table Tennis: The Data Void and the Uncounted Gems

In 2026, at a youth table tennis tournament in the Hai Phong arena, I sat in the third row and counted. Not the points — the computer handles that. I counted how many times a fifteen-year-old athlete performed a crossover step to the left to meet a topspin loop: seventeen times across four games. I wrote it in my notebook, along with the score at each occurrence, along with the boy's state of mind at the next point. I still keep that notebook today. No one else recorded it. The federation has no collection system, the coaching staff has no dedicated analyst, and the global tournament system stores only the final result and a few raw figures. A moment of execution at 10-9 — the instant table tennis calls golden — does not exist in any of our databases.

Twenty-three years in the profession taught me one thing: table tennis is a sport of small numbers, and those small numbers are precisely what we forget most.

Context: measured in millimetres, but never recorded

Table tennis is a sport where a point can be decided in roughly seven per cent of a second — the time the ball travels from one racket face to the other at top speed. At the elite level, people measure reaction time in milliseconds, spin in revolutions per minute, ball speed in the hundreds of kilometres per hour. But in Vietnam, we measure almost nothing. We count points, write down the winner's name, and put the notebook away.

Since 2026, WTT — the ITTF subsidiary running the professional tour — has operated a new structure with tiers from Grand Smash and Champions to Star Contender and Contender. This system computes points on a rolling 52-week cycle, meaning a player's points are gradually deducted by calendar. An injury, a skipped event, a dip in form — all leave traces on the ranking table, if we know how to read them. But to read them, we need data. And that data is nowhere to be found.

Over twenty-three years, I once witnessed an explosion of speed that no data table recorded. It was the 2026 National U19 semi-final at Lach Tray stadium, when coach Nguyen Van Cuong deployed a 3-4-3 with a high press. Midfielder Tran Duc Nam, sixteen years old, produced three assists and scored once inside the first half. I dropped my interview schedule to write a long piece on how the tactical system enabled the boy to break out. The article spread, and Hai Phong Club immediately promoted Duc Nam to the first team. From that moment I understood: the right system can flip the switch for a young talent. But in table tennis, I have never seen that switch installed systematically.

I saw that speed once, in Kazan, in 2026, when a nineteen-year-old ran through an entire defence in a few seconds. But that was football. In table tennis, that speed happens hundreds of times per match — in silence, unrecorded, unanalysed. Beneath each of those strokes lies a gem no one has picked up, simply because no one has bent down to look.

Core analysis: the history of rule changes and the cost of not measuring

To understand why data matters, look at the history of ITTF rule changes. Each rule change redefines the sport technically, and each time, the countries with data adapt faster.

In 2026, the ITTF increased ball diameter from 38mm to 40mm. The larger ball reduced spin and slowed flight speed, lengthened air time, and favoured a physical, rally-heavy style. Players who lived on spin and short speed had to change entirely.

In 2026, the scoring system moved from 21 points per game to 11. The number of games rose, each game shortened, and the psychological weight of the final points grew heavier. A player could lead 9-5 and still lose the game — something nearly impossible under the 21-point system.

In 2026, the ITTF banned the hidden serve. Previously, the server could hide the racket face, preventing the opponent from reading spin. The ban forced every player to serve openly, triggering an explosion of new service techniques.

In 2026, the ITTF banned volatile organic compound glue, the glue that increased the bounce and speed of the racket face. The ban significantly reduced the power of high-speed loop drives.

In 2026, celluloid balls were replaced by plastic balls. The plastic ball has different spin and a different trajectory, forcing players to restructure their entire looping and pushing technique.

Five rule changes in fourteen years. Each time, the countries with data analysis centres — chiefly China — seized the advantage first. They did not guess how the new ball would fly; they measured it. They did not speculate on which movement needed to change; they recorded, compared, and adjusted.

China's dominance of world table tennis is not only because it has many good players. Names like Ma Long, Fan Zhendong and the generations that followed did not emerge from nowhere. They are products of a data collection system at every level: from youth academies, from domestic events, from training matches with no spectators. A large share of the world's top-10 seats has belonged to Chinese players for decades, and that dominance is sustained by an analytical machine most other nations lack.

Their challengers come from smaller table tennis nations — such as Sweden with Truls Moregard, a young player who has caused upsets at major events. But even those upsets are often analysed using data their own opponents collected. In Asia, Japan is the only nation to have built a system close enough to compete at certain moments, while South Korea and the Taiwan region have maintained standing through disciplined youth training centres.

Meanwhile, in Southeast Asia, where table tennis remains a recreational sport with a few small training centres, data is mostly recorded by hand, if at all. A coach in Hai Phong, a coach in Da Nang, a coach in Ho Chi Minh City — each keeps their own notebook, and when they retire, the notebook vanishes. This is what I call the data void.

In Vietnam, table tennis holds a paradox. The number of recreational players is large, but the number of internationally competitive players is small. The cause is usually explained by physique, by training conditions, by lack of funding. Those three reasons are all valid, but they overlook a deeper layer: there is no system tracking a player from age ten to age twenty. We know a boy won the national junior championship, but we do not know how much he improved each year, to whom he lost at fifteen, or why. Without that data, every decision to invest in a talent is a gamble.

The worrying part is that the void exists not only at the organisational level, but at the level of public understanding. Vietnamese audiences remember the champion's name, but not who beat whom in the quarter-finals three years ago. They remember the decisive loop, but not at which score it took place, against an opponent with what style. Our collective memory of table tennis is episodic, not systematic.

The scouting network in our table tennis works much as it does in other sports: a coach spots a boy with good reflexes, brings him into a centre, and the family relocates. Sometimes this produces a player. Sometimes it produces a lottery ticket: the child grows up in a system that cannot measure, and at eighteen, failing to reach the professional threshold, has nothing to return to. Data cannot prevent that risk, but data can speak earlier: is this boy improving, or standing still?

Contrarian view: the data void is a cultural problem

People often say developing countries lack sports data because they lack technology. I do not entirely believe that. A phone camera can record every match. Scoring apps are free. Video analysis software grows cheaper. What we lack is not the tools, but the habit.

Many times I have stood in an arena, watching a good coach take notes after each game, but those notes are never converted into comparable data. They sit in the coach's head, serve one match, then are forgotten. The truth is that we treat data as an incidental task, not as part of the coaching profession.

This void produces two consequences.

First, we cannot honestly evaluate a young talent. Without figures on point-win rate in deciding points, on the ability to recover after losing a game, on positional choice when trailing — we are left with feeling. And feeling, at the elite level, is a poor guide.

Second, we easily inflate a young player after a few good matches, then grow disappointed when they decline. In table tennis, a world No. 200 can beat a world No. 50 on a good day. Without data to distinguish a day of brilliance from a genuine step forward, we will constantly confuse the two.

People call that fate; I call it a system that was never installed. A young talent does not need a spotlight, only someone who knows how to flip the switch — and in table tennis, that switch is usually a dataset we have never bothered to build.

Takeaway

Data does not create players. But data tells us which player is growing, and why. If every youth tournament in Vietnam were fully recorded — nothing complicated, just enough to compare — then in five years we would have a talent map no single selection session could produce. The question for Vietnamese table tennis coaches and administrators is not whether we have good players, but whether we have the courage to record what we are already seeing.