Vietnamese Women's Football Lacks a Data System, and That Is a Tactical Problem

In the 78th minute of a match in the Vietnamese national women's football championship, I added another tally to my notebook: the home team's ninth shot of the second half. No screen in the stadium displayed that number. After the final whistle, the press room received only the scoreline and the list of scorers. To know which team had more possession, I had to time the ball myself. To know who ran the most, I had to divide the pitch into six zones and count with my eyes, the way I have done for five years of covering women's football. An assistant coach standing beside me asked for the sheet back so he could compare it with his own impressions. That club had nobody whose job was to keep records.

The pitch leaves no room for prejudice – only the ball, the tactics, and whoever dares to stand up. But to see tactics, you need data. In Vietnamese women's football, data remains the most luxurious of all luxuries.

The Vietnam women's national team has won gold at three consecutive SEA Games, and in 2026 it reached the group stage of the Women's World Cup in New Zealand for the first time, drawn with the United States, the Netherlands and Portugal. The 0-7 defeat to the Netherlands on August 1, 2026 is the most expensive tactical lesson Vietnamese women's football has ever received. Yet anyone wanting to understand why the team collapsed in the second half of that match will find no data anywhere. There is no breakdown of distance covered by half, no duel counts, no map of where players received the ball. What remains is memory, feeling, and sentences like "it seemed the team ran out of legs".

The irony is that men's football in this country moved far ahead in this department long ago. V.League has a data provider, post-match statistical tables after every round, numbers quoted as the default language of the trade. The women's game has none of it. The organisers publish the score, the fixture list and the scorers. The rest of a football match – who set the tempo, who broke it, who ran into space, who covered for whom – is not recorded as data, surviving only in the heads of a few people in the ground.

To readers who do not follow football regularly, this gap sounds technical. It is not technical at all. Expected goals, or xG, measures the quality of the chances a player creates, not just the number of goals. Progressive passes count the balls that move a team from its own half into the opponent's. Distance covered and sprint counts tell you whether a player still has legs at minute 80. A heat map shows where she stands within the system. Without those four groups of metrics, viewers only know who put the ball in the net, and every other contribution becomes invisible.

In 2026, I stayed behind after each round to analyse 1,432 passages of play from the women's league, writing every pass by hand into a spreadsheet. The result made me check it three times: Tran Thi Thuy Trang, then a young midfielder at Ho Chi Minh City, had a chance conversion rate of 23% across 18 matches – a level no striker in the league reached. That figure appeared on no official bulletin. It existed only because one person was willing to sit and count. The analysis drew roughly 250,000 reads, and the most telling detail is that many of those readers were young women watching a women's match in full for the first time.

Back to the 2026 World Cup. After the Netherlands match, I received dozens of questions from colleagues, all circling one thing: why did the team fall apart in the final thirty minutes? There are two plausible hypotheses. One is physical decline after chasing the ball for too long. The other is that the shape stretched as the midfield ran dry, opening space between the centre-backs and the full-backs. Distinguishing between them requires distance data in fifteen-minute blocks and the average positions of each line. That data does not exist in the archives of Vietnamese women's football. So both hypotheses live side by side, and nobody is held responsible for answering.

The biggest consequence is not in the stands but in closed meeting rooms. Without data, a scout has only two tools: memory and word of mouth. A player in Son La or Thai Nguyen who performs all season will struggle to be seen if her club is not televised. Transfers in women's football still happen the old way: a phone call, a few clips shot on a mobile phone, an introduction through an acquaintance. Huynh Nhu's move to Portugal to play for Lank FC was a turning point, but most information about her during that period came from the foreign club itself; at home there was almost no set of metrics to compare before and after. A football ecosystem that cannot count a player's value cannot negotiate her price either.

Here a counter-intuitive caution is due. The laziest fix is to import the entire metric set of men's football into the women's game and believe the problem is solved. I do not believe that. The heat map is becoming a new kind of fortune telling: it draws a player's position beautifully, but often conceals her real role in the system. A midfielder told to hug the touchline to stretch the opponent's back line will produce an unremarkable heat map, even though that work is the precondition for someone else's goal. Dropping metrics designed for male European players into a Southeast Asian women's league, where pitches, fixture density and nutrition are entirely different, produces data that is both incomplete and wrong.

The second caution concerns money. Many argue that once there is data, sponsors will follow. That argument has the order backwards. Sponsors come for audiences, while data is first and foremost a professional tool: it helps a coach rotate more sensibly, helps the team doctor spot overload before injury strikes, helps an eighteen-year-old know what she must improve to earn a national call-up. The cost of recording a full women's season properly is not large. A few dozen matches, one note-taker and one fixed camera each, adds up to far less than a single foreign signing in the men's league. The problem is not money; the problem is whether anyone will make this mandatory in the regulations.

The third caution: data cannot be a charitable project with an end date. For years, Vietnamese women's football has received short-term support programmes that did excellent work for two or three years, then stopped, and everything returned to the starting line. The only way data survives is by writing it into competition regulations: every club submits a match report on a common template; the organisers publish raw data after each round; and that data belongs to the community, not to any single sponsor.

Data magnifies emotion – it shows us why one goal by a young woman shook a whole league. But it must be data designed for them. I propose a bespoke metric set, measured against the real conditions of Vietnamese women's football. Instead of only tracking distance covered, track minutes played on poor-quality pitches. Instead of only counting sprints, count the training sessions per week a player still has to spend on a second job to make ends meet, because that variable bears directly on injury. Instead of only counting goals, count how often a player receives the ball while marked, because in matches where the weaker side holds the ball for twenty percent of the time, keeping possession under pressure is already a skill worth paying for.

There is no need to wait for a perfect system. One notebook, one shared spreadsheet and three patient people are enough to begin, just as I began in 2026 with 1,432 passages of play recorded by hand. A statistics student can adopt a club; a sports journalist can share the data they collect instead of keeping it private; a club can open a public folder for each season. Every passage of play is a piece of a puzzle – and every piece is a life waiting to be recognised. And once a piece is written down, it no longer depends on whether somebody remembers.

The lights go out, but life goes on – I write about women footballers who never leave the pitch even with no crowd watching. But I want more than a word of recognition for them. I want next season, when a young woman runs eleven kilometres in a match, that number to exist somewhere, so she no longer has to prove her ability with other people's faith.