The Gap Nobody Measures: Vietnamese Women's Volleyball and the Empty Notebook on the Stand

The Gap Nobody Measures: Vietnamese Women's Volleyball and the Empty Notebook on the Stand

Around 21:40, when two banks of floodlights in the arena had already gone dark and only a pale strip of light remained over the scorer's table, I was still sitting in row seven. In my hand was a pencil-ruled notebook split into six columns: first receiver, attack position, type of rally, outcome, the score after that rally, and one final column for how it all felt. The first five columns were almost empty. The last one was full.

The match had just ended. The score was up on the electronic board, reposted on the tournament page, repeated in the evening bulletin. But what I needed in order to tell that match properly was nowhere: rallies per set, successful blocks by player, what percentage of first-ball receptions each team converted into points, how many balls the libero dug in the fourth set. After nine years of following Vietnamese women's volleyball, that night I still had to say the sentence I hate to the presenter next to me: "I don't have detailed numbers."

The stand was emptying. I closed the notebook and understood something rather late: the biggest obstacle facing Vietnamese women's volleyball is not the height of its middle blockers — it is that we have been letting our own memory drift away without measuring it.

A silence built over a very long time

On paper, Vietnamese women's volleyball has a complete competition structure. The national championship, organised by the Vietnam Volleyball Federation, brings together traditional clubs such as Bộ Tư lệnh Thông tin, VTV Bình Điền Long An, Ngân hàng Công thương, Hóa chất Đức Giang Hà Nội, Thanh Hóa, Quảng Ninh, Đắk Lắk, Vĩnh Long and Ho Chi Minh City. Below that sit the A-level championship and the youth system. At the top is the national team, with its regional and continental calendar. The VTV Cup, an international women's tournament run by Vietnam Television since 2026, was for years one of the few windows through which domestic fans could watch foreign women's teams play in Hanoi.

Formally, that is a thick enough ecosystem. In terms of data, it is as thin as tracing paper.

I first noticed this in the 2026 season, when the national women's championship was postponed for months because of the pandemic. No matches, no bulletins, nothing to compare. I started going to an arena in Hanoi on weekends of my own accord, sitting on an almost empty stand and noting down team training sessions. A leading attacker on the home side served into the same corner again and again, fifteen times. Nobody clapped. Nobody counted. I counted, and realised that if I had not counted, there would be no trace that the session had ever happened.

The contrast with men's volleyball is blunt. A men's final is usually broadcast live, with statistical graphics appearing after every rally and a detailed sheet for every set. A women's match in the same round is usually scheduled at 14:00 on a weekday, with no broadcast, no fixed high-angle camera, and sometimes an electronic board that shows only the set score. Sponsors look at television. Television looks at viewing figures. Viewing figures depend on the time slot. The time slot depends on whether the match is deemed important. That loop closes every season, and it closes in silence.

Four basic metrics, and why they do not exist here

Volleyball has one of the most standardised statistical systems in team sport. At competitions run by the International Volleyball Federation, every rally is coded against a unified notation: the point, the scorer, the attack type, the quality of the second contact, the defensive position, the outcome of the serve. From that raw data come attack success rate, attack efficiency net of errors, blocks per set, ace-to-error ratio, perfect-pass rate, and the percentage of first-ball possessions converted into points — the last of which is what actually decides matches in the modern women's game.

At Vietnam's national women's championship, most of those numbers are never published. The organisers post results, standings, starting line-ups, and in some seasons individual awards for most valuable player, best spiker, best blocker. Awards exist, but awards do not explain why. A middle blocker may win an award simply because her team played more sets than others, so she had more trips to the net. Nobody can be sure, because there is nothing to check against.

Based on my experience watching matches at arenas in Hanoi, Đại Yên and occasionally Quảng Ninh or Thanh Hóa across many seasons, I can picture the top half of the table fairly clearly. But picturing is not data. I can know who scored the most points in a match, but not how many attempts it took, or what kind of block she was hitting against. The difference between a spiker scoring twenty points on forty swings and one scoring twenty on fifty is the difference between a team with a serious defensive system and a team burning out its star.

In volleyball, that is not a small thing. A heavily used attacker tends to hit a physical wall in the fourth set. If her attack efficiency is still high in set three, the team still has a door. If that efficiency has already dropped three percentage points from set two, the coach needs to know, so the attack can be shifted to the middle or pushed out to the wing. In Vietnam, most of those decisions are made on instinct and on the coach's own memory, not on a sheet of numbers. The instinct of people who have spent thirty years in the game is an asset, but it cannot be stored on a computer, cannot be handed to a new assistant, and cannot teach a nineteen-year-old.

The people who write by hand

Every women's team has a note-taker. Usually an assistant coach, or a staff member doing two jobs, sitting at the end of the bench with a clipboard and a pen. They mark the opponent's second contact, note their own blocking positions, and sometimes note how the match feels. Those sheets last one evening, get reviewed twice during the interval and in the changing room, then end up in a bag on the coach back home.

Two years ago I asked an assistant coach with a southern women's team whether she kept season-long records. She answered honestly: "Keeping them is one thing, but what is the point when nobody can find those sheets next year." Around the same time, I knew of a handful of fans building their own tracking sheets, typing them up after each match, sharing them in closed groups of a few hundred members. Better numbers exist there than anywhere else. So do rather fierce arguments about who deserves a national team call-up. But that is the playground of volunteers working for free, and it survives only because a few individuals have not given up.

The statistical infrastructure of a decent women's volleyball scene does not require much money. It requires one dedicated note-taker per match, one fixed camera on the opposite side of the court, and one public database. Those three together cost less than one foreign player's contract in the men's league. Nobody in Vietnam disputes this on technical grounds. What is missing is the agreement that it is worth doing.

When players go abroad, the data goes with them

Here lies the irony: Vietnamese fans once knew more about a national team player while she was abroad than while she was playing at home. Spiker Trần Thị Thanh Thúy, 1.93m tall and born in 2026, wore the jersey of Japan's PFU Blue Cats in the 2026-2026 season. There, every match came with a full statistical sheet: attempts, points, efficiency, blocks, aces. For the first time, domestic fans could follow a Vietnamese player through concrete numbers rather than descriptive prose.

The striking part is that this level of detail was not the player's achievement. It was the achievement of the league she played in. The same player, the same swing, became almost statless again upon returning to the domestic league. The measurement gap between a Japanese season and a Vietnamese season is wider than the competitive gap between the two leagues. We see our own players more clearly through somebody else's eyes.

That is why I think this is no longer only a women's volleyball story. Middle blocker Nguyễn Thị Ngọc Hoa, who captained Vietnam's women's team for years, spiker Nguyễn Thị Bích Tuyền, setter Đoàn Thị Lâm Oanh, libero Đặng Thị Kim Thanh — each of them has a technical profile that could be written down, if somebody bothered to write it. Those profiles would explain why a team that cruises through the group stage struggles in the knockout rounds, why a setter rated highly at youth level stalls at senior level, why a libero with a modest perfect-pass rate can still have a high dig-and-rescue rate.

Without those profiles, every season ends in an argument with intuitive answers. People fight over who deserves a national team place, who deserves a SEA Games ticket, who was forgotten. Those arguments are not bad. They simply have nothing to stand on.

The loop: no broadcast means no footage, no footage means no numbers

In other sports, data has an important secondary source: video. A recorded match can be re-analysed at any time, even three months later. In Vietnamese women's volleyball, most group-stage matches at the national championship are not filmed by more than one camera. A single fixed camera is enough for a news clip, not enough to reconstruct ball direction and blocking positions rally by rally.

The result is a loop that locks itself. No footage, no numbers. No numbers, no deep analysis. No deep analysis, no reason for fans to start following mid-season. No fans, no reason for sponsors to pay for a better time slot. No better time slot, even fewer viewers, and every club has an excuse to call statistics a luxury.

What matters is that this loop is not fate. It is maintained by small decisions, repeated: the decision not to sign a note-taker, the decision to place the camera where the pictures look good rather than where the analysis works, the decision to hand out individual awards instead of statistical sheets in the post-match release. Each decision looks reasonable on its own. Placed side by side across ten years, they produce a women's volleyball scene with no quantitative history.

An empty stadium teaches you to hear the pulse of the ball more clearly. But if nobody writes that pulse down, ten years from now only the memories of a few individuals will remain.

Counter-intuitive: when data arrives, it usually arrives to sell, not to understand

There is a common argument I do not fully accept — that women's volleyball lacks data because it lacks money. Money is part of it, but how money arrives is the real problem. In many cases, the first thing invested in a women's sport is not an analysis system, it is publicity. Editors are asked to find inspiring stories, sponsors want their brand attached to a face, and so we get beautifully shot short videos, deeply moving profiles, and still no attack efficiency table.

The danger is that this produces a generation of players measured by meaningless indicators. Volleyball has not yet walked the path of men's football, where metrics such as distance covered get packaged as effort indices and sometimes generate fine-looking reports for runs that lead nowhere. But the mechanism is identical. A spiker who swings forty times will post a more impressive total than one who swings twenty. If you only read totals, the busier player gets the praise. If you read efficiency, the story can flip entirely.

Vietnamese women's volleyball has another layer: agents. As players began to get opportunities abroad, the middleman role grew. An agent is the bridge between a domestic club that cannot pay enough and a league in Thailand, Japan, Indonesia or South Korea. The bridge is necessary. But its cost is rarely stated: the commission, the tie-in clauses, and above all the inflated numbers used to convince a foreign club. When no public source of verification exists, the agent becomes the only source of information about a player. That is too much power to place in the hands of a party with a direct financial interest.

I do not think women players need to be protected by keeping them at home. I think they need to be protected by making their numbers public before anyone gets to price them.

A trophy does not discriminate by gender; only the spotlight does. And the spotlight only falls where someone is standing with a notebook.

What is changing, and what needs to change

The picture is not entirely dark. In recent years, some women's clubs have secured steadier sponsorship, some knockout matches have been streamed on digital platforms, and fan-run statistical sheets have become an unofficial but credible infrastructure. At national team level, when Vietnam plays in Asian competitions, its players enter the host's statistical system, and those sheets come home — usually only to be read, rarely to be analysed further.

Three things can be done immediately without waiting for a large budget. First, require one dedicated note-taker at every national women's championship match, including group games, using a unified notation across the season. Second, publish raw data in open form after each round, so anyone who wants to analyse it can. Third, install an analysis camera on the opposite side of the court, not just a camera in the flattering angle for news bulletins.

None of that will add a centimetre to any middle blocker. It will do something else: turn what currently lives in the memory of a few dozen people into the property of an entire sport.

The girl back then did not know she was writing history. A nineteen-year-old middle blocker walking onto court for a 14:00 group-stage match in front of two rows of spectators does not know it either. She only knows she just got a block, and nobody wrote it down.

If ten years from now another girl stands in that same position and wonders how the ones before her played, the answer will depend on whether today we are willing to sit on the stand thirty extra minutes, open the notebook, and fill in the last column.

A dream does not need a ticket, but it needs someone willing to tell the story.