The Data Void in Women's Sports: When Vietnam's National Women's Team and Women's Esports Are Analysed Into Zero

The Data Void in Women's Sports: When Vietnam's National Women's Team and Women's Esports Are Analysed Into Zero

A white ball on the secondary screen

On the night of 22 July 2026, at Eden Park in Auckland, Vietnam's national women's team walked out for the first World Cup group-stage match in its history. The opponent was the United States. Ninety minutes later the score stood at 0-3. Goalkeeper Tran Thi Kim Thanh made several saves that had to be watched again, and the Vietnamese back line absorbed more than twenty shots towards its goal.

I was sitting in front of two browser windows. One was the live stream. The other was the match-data page.

The second window was blank.

The connection was fine. The page loaded. There was simply nothing inside it: no heat map, no per-player passing numbers, no PPDA, no touch distribution, no log of time the ball spent in play. What I had was the scoreline, the starting elevens, and whatever my eyes managed to register while the match ran past me.

At that same hour, if I reopened any men's Champions League quarter-final from the 2026-2026 season, I could count the number of times a midfielder applied pressure in the attacking third, split by half, by fifteen-minute block, even by individual set piece. I could look up how many kilometres that player ran, at what speed, and at which minute the speed collapsed.

The distance between those two windows is wider than the distance between two matches. One side is a sport with a measurement system. The other is a sport with a memory.

And for most of its existence, women's football has been recorded only as memory.

Fifteen years old, and one sentence from my father

I went to the 2026 World Cup to watch men's football. I stayed because I found the real thing.

I was fifteen then, living in Incheon, watching with my father in a small apartment. The whole city was talking about South Korea beating Germany 2-0, about the goal in the sixth minute of second-half stoppage time. But on the fourth night of the tournament I wandered into an old recording: the final of the 2026 AFC Women's Asian Cup. Japan beat China 1-0 with a goal in the 51st minute. Japan had less possession, sat compact, and still won the trophy.

My father let slip a compliment built on comparison. The sentence stopped me, not because it was insulting, but because of its structure: a women's team was being praised only when it behaved like a men's team.

The world discovered women's football too late. I was lucky enough to discover it in time.

For a month afterwards I rewatched every recording of women's Asian football I could find and wrote a five-thousand-word analysis. It received twelve reads. A local sports editor sent a note of encouragement. But the thing I remember most is not the number twelve. The thing I remember most is that I had to rebuild the entire match dataset by counting it myself.

Counting a midfielder's passes across one half. Counting how many times a centre-back stepped up to intercept. Counting the seconds from a goalkeeper's restart to the opponent winning the ball back.

That is how I learned that data is not a free gift falling out of the sky. It is an investment with someone paying for it, someone operating it, someone deciding who gets access and who does not. And in most women's football competitions, that decision was made long before kick-off.

Three layers of data, stripped out

Based on my experience following these matches over seven years, I divide football data into three layers, and all three have their own problem in the women's game.

The first layer is event data: goals, assists, cards, substitutions, throw-ins, corners. This is the cheapest layer, because it can be collected semi-manually by one person watching a recording. In women's football this layer exists, but at a coarse level. You can know who scored, but not where the goal began.

The second layer is tracking data: the coordinates of players and the ball at fractional-second intervals, captured by multi-angle camera systems or a chip inside the ball. This is the expensive layer, and it is also the layer that generates almost the entire vocabulary of modern analysis: xG, PPDA, progressive passes, packing rate, expected threat. In women's football this layer exists only in a very small number of competitions, usually at major matches with international broadcast, and almost never at domestic club level.

The third layer is contextual data: fixture calendars, recovery windows, pitch conditions, number of training days before a match, salaries, contracts, bonuses. This is the least discussed layer and the one that decides the most. Without it, you cannot explain why a team plays well for forty minutes and then collapses in the last twenty.

These three layers are not independent. They leak into each other. When tracking data disappears, the analyst is forced back to event data and starts telling stories through goals. When all you have is goals, the default story becomes a story about individuals: this player is good, that player is weak. Tactical structure vanishes from the narrative, and with it every serious tactical argument vanishes too.

I started calling that phenomenon the data void. It is not ignorance. It is a measurable blank region.

World Cup 2026: what could be measured and what disappeared

On 22 July 2026, Vietnam's women lost 0-3 to the United States at Eden Park. It was the highest-production-value match Vietnamese women's football had ever been given. And it was exactly there that I saw most clearly the boundary between what gets measured and what gets abandoned.

What was measured: shot counts, possession share, saves, fouls, cards. That is the event layer at its fullest. You can look up that Vietnam barely held the ball for most of the match, that the defence had to drop deep continuously, that the Vietnamese goalkeeper was the busiest player in the first half.

What was abandoned: how the distance between Vietnam's lines changed as fitness dropped; how many metres the defensive block shifted laterally when the opponent switched wings; how many metres at high speed the Vietnamese midfielders had to run to compensate for repeated turnovers. Those things require tracking data, and that layer was not published.

On 27 July 2026, Vietnam lost 0-2 to Portugal. I remember this match for a detail I could only see and could not prove: Vietnam's ball progression in the second half was visibly quicker than in the first, after the team shifted to a more direct approach. There is no metric to support that. I only had my eyes.

On 1 August 2026, Vietnam lost 0-7 to the Netherlands. Group E closed with Vietnam taking no points from three matches. But those three matches were the highest-value data events in the entire history of Vietnamese women's football, and most of that value was wasted.

I mean wasted in a very concrete sense. A national team preparing for the next four-year cycle needs to know precisely where it is weak: in escaping pressure, in transition speed, in retaining the ball under pressure, or in set-piece defending. Three matches against three far stronger opponents are a free laboratory. But without instruments, the laboratory reduces to collective memory, and collective memory always tilts towards emotion.

Tactics do not ask your age, and they do not ask your gender. They ask one thing: are you ready to try?

Vietnam's domestic women's league: where data dies before birth

If the Women's World Cup is a partial blank region, Vietnam's national women's football championship is a total one.

I have spent many evenings trying to find match data for that competition. What exists: results, league tables, occasionally a list of goalscorers. What does not exist: minutes played per player, substitute appearances, completed passes, ball recoveries, turnovers.

The consequence does not sit with the fans. The fans still watch. The consequence sits elsewhere: in selection.

What is a national-team head coach supposed to base a call-up on when she wants to bring in a young midfielder from a provincial club? If all she has is a scout's eye and a few amateur recordings, the decision depends on how many times the scout was sent out. And scouting budgets are not distributed evenly across clubs.

What is a player supposed to send when she wants to prove she deserves a move abroad? In men's football she would send a data dossier: minutes, goals, assists, progression metrics, video cut to every relevant action. In Vietnamese women's football, all she usually has is a self-shot video and her agent's word.

That is why I treat the digitisation of women's sport not as a technology topic but as a topic of opportunity. Every additional metric recorded is one more door opened for someone without connections.

I am not naively optimistic about this. I know there are small competitions where full data capture would cost more than the entire media budget. But I also know there are data layers so cheap they are almost absurd, if anyone is willing to sit and count: actual minutes played, minutes the ball is in play, touches, clearances.

The problem was never technology. The problem is the decision about who deserves to be recorded.

Women's esports: a void designed from the start

Esports holds a mirror up to traditional sport, and in this case the mirror is not comfortable.

Esports was born with the opposite default. Every match leaves behind a complete digital record: match IDs, full replays, per-player statistics, kills, deaths, gold or resource accumulation by the minute, character pick and ban rates. The publisher owns the data, but that data exists as a free by-product of running the servers. Nobody has to pay extra to obtain it.

That is why esports can talk about tactics continuously: it never has to prove that the data deserves to exist.

But when you cross into women's esports, that structure inverts.

Most women's esports events in Southeast Asia exist as invitationals, exhibition events, or competitions tied to a specific marketing campaign, rather than an open qualifying system running all year. An invitational without qualifiers has no cumulative ranking. Without a cumulative ranking there is no head-to-head history over time. Without head-to-head history there is no long-running narrative, and without a long-running narrative nobody sits down to analyse anything.

Women's events such as the MLBB Women's Invitational, run by the publisher since 2026, or the Game Changers programmes within the Valorant ecosystem, have proved that demand exists. But they still operate seasonally, in bursts, not as a continuous system. A burst-based system produces fragmented data, and fragmented data cannot be used to compare a player this year with that same player two years ago.

The interesting part is that here, women's esports suffers exactly the disease of women's football, despite starting from a completely different technical base. Women's football lacks data because collection infrastructure was never funded. Women's esports lacks data because the competition calendar was never designed to accumulate it.

The same outcome, two causes, and one thing in common: neither is considered an object worth tracking over the long term.

Knees and confidence

There is one domain where the data void has direct consequences for the human body: anterior cruciate ligament injuries.

The rate of ACL rupture among women footballers is several times higher than among men, and this is a comparatively well-researched area within women's sports medicine. But the void lies after the injury, not before it.

Vivianne Miedema tore her ACL in December 2026 and was out for close to ten months. Leah Williamson tore hers in April 2026 and missed the 2026 World Cup in Australia and New Zealand entirely. Alexia Putellas, winner of the women's Ballon d'Or in 2026 and 2026, tore her ACL in July 2026, returned in April 2026, and by the 2026 World Cup was only a substitute option.

Three cases, three trajectories, and one question nobody measures: after the ligament heals, does that player still dare to go into a challenge at full speed?

My point is not about the injury. It is about recovery data. A player returning after nine months can pass every medical test and hit every muscular strength target. But how many times she decelerates instead of committing to a duel in her first ten matches back, how many times she passes backwards instead of turning, how many times she chooses the safe position over the risky one — those things are only measurable if someone is tracking and recording.

And in women's football, almost nobody records.

This leads to a consequence rarely discussed: the second phase of a women's player's career, after her first serious injury, is the phase least illuminated by data. She is judged on feeling. She is declared out of form on the basis of three goalless matches, when in reality she is playing a different role to offload her knee.

Without instruments, every conclusion becomes a verdict.

Who actually pays for women's data

Here I have to say something many people in the industry know but few write down.

In the sports data market, the customer group that pays consistently, on time, and for essentially every match is not broadcasters, not clubs, not federations. That group is betting companies.

They need real-time data at low latency, across many competitions, including competitions nobody broadcasts. To them, a match in a second-tier women's league has exactly the same data value as a match in a top-tier women's league, as long as someone is betting on it.

That is the darkest side effect of the digitisation of sport: the most sustainable funder of women's sports data comes from an industry women's sport has no desire to be associated with.

I do not conclude that women's sports data should stop existing because it serves betting. I conclude the opposite, and this is the counter-intuitive point: the existence of data does not depend on who uses it, but on whether it is created at all. Once data exists, it belongs to everyone: coaches, players, journalists, fans, and also those who place bets.

In other words, refusing to build data infrastructure out of fear of misuse will not stop betting. It only guarantees that the only party holding data is the bettor, while the national-team coach holds nothing.

Competitive value, commercial value, and a badly calibrated scale

The most common argument against investing in women's sports data is a commercial one: low viewership, low rights fees, low return on investment.

I think that argument is correct on the accounting and wrong on the timing.

Vietnamese women's football won four consecutive SEA Games titles between 2026 and 2026, with finals played in front of stands that were far from empty. Vietnam's women's team at one point entered the world's top thirty-two in the world federation's ranking. Huynh Nhu became the first Vietnamese woman to play professionally abroad when she joined Lank FC in Portugal's women's top flight in 2026.

All three of those facts are true. What is notable is that all three have to be restated every time someone questions the appeal of women's football, instead of simply sitting in a database anyone can query.

A sport without a database gets re-evaluated from zero after every cycle. That is the most invisible form of commercial damage: not losing money once, but losing the ability to accumulate credibility.

Three seconds to verify

That night, after Vietnam lost 0-3 to the United States, I closed the blank data window and reopened the recording of Japan beating China 1-0, the one I first watched at fifteen.

Japan still had less possession. Japan still won.

I realised that what I have been chasing for seven years was never a table of numbers. It was the ability to verify something I believe. A belief without data is still a belief, and a belief cannot be argued with.

The hundred-thousand-view article does not belong to me. It belongs to them — the ones who waited too long to be recorded.

Women's esports and women's football can take two different roads to the same blank space. What I want to know is this: when tracking data finally reaches Vietnam's national women's football championship, when every touch of a nineteen-year-old from a provincial town is recorded and archived, will we still dare to keep the conclusions we once stated about her on feeling alone?