The Data Void of Vietnamese Tennis

The Data Void of Vietnamese Tennis

In November 2026, in the stands of a tennis court in Thu Dau Mot, I sat counting. Not spectators — I counted the people whose job was to record what had just happened on court. The men's singles final of a national event: two players, one referee crew, four line judges, six empty seats in the technical area. No sensors, no statistics software, no one pressing a button. After three sets, the organisers read out the score, handed over the trophy, and switched off the lights.

Three hours of tennis left behind exactly one line of data: 6-4, 3-6, 7-5.

I once stood on the other side of the baseline. Back when I was competing, I trusted my own feel — feel for the ball, feel for rhythm, feel for the moment an opponent is about to break. When I moved into writing, I learned a cruel lesson: feel cannot be verified in court. Only documents can. And here, the documents do not exist.

A sport run on memory

World tennis has measured itself for a long time. Hawk-Eye has tracked ball trajectories at major events since 2026. The ATP and WTA publish detailed match statistics after every match: first-serve percentage, points won on first serve, points won on second serve, break-point conversion, winners, unforced errors, average game duration. Independent platforms reconstruct an entire career in surface-specific Elo ratings.

In Vietnam, we have the score.

This gap does not merely disappoint fans. It strips three groups of people of the ability to make decisions. A coach has no basis for fixing a second serve that is decaying tournament by tournament. A journalist has no basis for analysis beyond retelling results. A sponsor has no basis for knowing what their money is actually buying.

Tournaments that leave no trace

The domestic circuit has all the formal components: a national championship, age-group junior events, amateur tournaments, and a handful of hosting slots on the ITF World Tennis Tour and the ATP Challenger Tour. What should accompany each event — the match record — vanishes right after the closing ceremony.

A player enters four tournaments in a year. People remember he reached the semi-final of the second. Nobody can say how many points he won on second serve in the third, which game he was broken in, or what percentage of points he won in rallies lasting more than seven shots. Those things were never stored, so they do not exist.

In 2026, I emailed the organisers of three different events asking for match statistics. Two never replied. One wrote back to say the unit does not retain detailed data. That was the most honest answer I have ever received in this profession.

At junior events, things are rougher still. Results are written by hand on paper slips, pinned to a noticeboard, photographed, posted in a group chat. Three months later the photo has drifted away. A whole cohort passes through eighteen years of age without leaving a single measurable line behind.

One detail is easy to overlook. Almost every competition court in the country is an outdoor hard court, so surface-based analysis has almost no room to breathe. But the problem is not the surface. It is that even on a single surface, we measure nothing.

Events on the international calendar hosted in Vietnam do generate official data, but that data sits on servers abroad and is never retained domestically as an asset. A country hosts a tournament without owning the record of the tournament it hosted.

The federation's empty archive

My professional rule is three independent, matching sources. With Vietnamese tennis, I usually have one: a photograph of the scoreboard.

The federation publishes results, entry lists, schedules and press releases. There is no searchable database. To find out how many matches a player won at eighteen, you have to dig through social media, and usually you cannot. Compare the neighbours: Japan's association has maintained tournament records across decades; Thailand and Indonesia publish internal age-group rankings. We have photographs.

The consequence lies deeper. Without data there is no trustworthy domestic ranking. Without a trustworthy ranking, international entry slots are allocated by relationships and impressions. A personnel decision based on impression cannot be challenged, because there is nothing to challenge.

Media that translates instead of measuring

Most tennis coverage in Vietnam is translated copy. A Grand Slam takes place, the newsroom translates a foreign report, adds a photo, publishes. When a domestic event takes place, the story shrinks to a score plus one quote from the champion.

This is where I have to be blunt. Sports journalism cannot demand transparency from others while living off numbers that are handed to it.

Based on my own experience watching matches across many domestic seasons, a pattern repeats after every match: people argue about spirit, about character, about class. Those three words cannot be measured, and precisely because they cannot be measured they become universal explanations. Winning is character. Losing is mentality. A sport that lulls itself with adjectives instead of numbers will never know where it stands.

A notable side effect: when nobody can be checked, the supply of experts rises in inverse proportion to the supply of data. Anyone can hold forth on a player's character, because there is no table to contradict them.

Money moving in the dark

In the ghost season of 2026, I sat in an empty stand and watched money flow into the pockets of people with power.

That sentence is true in the literal sense as well. When the stands are empty, nobody counts. When nobody counts, numbers become flexible. For a sport with no match data, the mechanism is identical.

A sponsorship for an event with no statistics, no spectators and no broadcast contract is money that exists in a space that cannot be audited. Nobody can prove it was siphoned. Nobody can prove it was not. Opacity is the natural habitat of any arrangement that needs no accounting.

People call that a two-price contract; I call it the first lesson on my home court.

Vietnam's tennis problem is not necessarily that wrongdoing exists. It is that the current information structure makes wrongdoing, if it exists, undetectable. That is worse than a specific scandal.

I do not believe in hunches, I believe in a half-cent discrepancy in a transfer ledger. Here, we do not even have a ledger to be off by half a cent.

The other side of the argument

There is an honourable counter-argument, and I do not want to skip over it.

With a tight budget, every dong spent on a statistics system is a dong not spent on courts, on coaches, on scholarships for children. A tennis nation with ten standard courts and three international coaches will not automatically become stronger because it has scoring software. Data does not create players. Many countries rose without a single statistics table. This argument is half right.

Data genuinely does not create good players. It determines whether good players get discovered. A fourteen-year-old in Dong Nai beats an older opponent at a junior event, and the whole story ends as one photograph. Nobody knows what she won with. Six months later she is forgotten in the crowd, and nobody knows why either.

There is a sharper counter-argument: data in Vietnam will only serve public relations and become a tool for polishing reputations. That can happen. But even misused data is better than data that does not exist. Misused data can still be argued with. Data that does not exist cannot.

The work does not need billions

I record every footprint on the court so that when they wipe their hands, I recognise every hand.

A minimal match record has seven fields: first-serve percentage, points won on first serve, points won on second serve, break points created, break points saved, double faults, points ending in a winner. Those seven fields go into a spreadsheet, published openly, updated after every match. One person pressing buttons per match. The cost for a national event is lower than the cost of printing the opening ceremony banners.

I am setting myself a marker. In three years, the question of what first-serve percentage Vietnam's number one player has must be answerable within three minutes, by anyone, without asking permission.

The tennis courts are still there, and the children are still hitting balls every morning. What we have never had is the ability to remember.