Vietnamese Football Lacks Data: When Analysis is Just Blank Pages

I just left the training ground of a V.League club, holding a “tactical analysis” provided by a media unit. Three A4 pages full of text, but the only number visible was… the referee's date of birth. There were no kilometers covered, no list of pressing players, no charts at all. People call it a 'heat map', but it smelled of waiting-room perfume rather than the heat of the match. Over the past two decades, I have witnessed many matches in Vietnam. Unlike top European leagues, match data here is mostly a postcard from mass companies, with no clear source. Clubs often keep their own records but do not publish them. Even television stations and newspapers lack a proper collection system. For those who want to write deeply about tactics, it is a dark zone. I once had to follow each training session and count every pass of a 19-year-old midfielder, as I did with Lê Duy Thanh in Khánh Hòa in 2026. But that is not always possible. In my view, a football article truly begins when basic data is in place. Numbers like 'shots on target' or 'possession time' are only the surface. What I need are numbers about off-ball movement, average formation, frequency of backward passes to the goalkeeper. But here, statistical units often copy foreign models that don't fit the context. For example, in every V.League match, they run a 'passes per defensive action' (PPDA) metric without considering the pressure from Nha Trang stands. They alone don't understand that in tropical football, dribbling in the rain must also be counted. Thus, our data analysis often resembles building a castle on sand: based on shallow reports. In the analysis I received this morning, the author seemed to suggest that the opposing left winger 'moved wide', but no image or number proved it. They just sat in the stands, looked down, and guessed. I rewatched the player's jersey on screen and realized he had swapped wings with a teammate after 15 minutes. The analysis had no idea, because they had no data. At 62 years old, my understanding of football comes from living with a team. You cannot analyze a match if you don't know whether that player slept enough after a family argument. Many tabloids use the word 'thăng hoa' when a player scores twice, but that is superficial. Look at how teammates passed to him, what space was created. However, those things are almost never recorded. According to my data, in the last 10 years, only 12 V.League matches have had full per-player passing data recorded by a third party. Most is from foreign companies like Opta or Instat, and they only care about a few big clubs. Smaller clubs are completely in the dark. Many analysts think that lack of data is an opportunity for free creativity. But that leads to vague, unverified articles. I argue that it is the greatest risk. An analysis without evidence is worse than no analysis at all, because it deceives readers. Remember, in a data fire, a newspaper can inadvertently cause panic. But at least, if there is no analysis, fans can watch the match themselves. If someone injects them with a fake 'truth', they will believe it. The real match between two teams is not only decided by goals or cards. It lies in the rhythm of passes, the shifting of the defensive line, and the split-second decisions. But all those things disappear if no one records them. I once went on a 47-day trip with Khánh Hòa before the 2026 season. I had no modern GPS devices, only a notebook and pen. I counted every pass by Lê Duy Thanh in each training session: on one day he made 214 passes, only 12 misplaced. But when I put that number into an article, many people said I had 'no basis'. They are used to being fed numbers from big companies, so they don't trust manual counting. This shows that even genuine data, carefully collected by humans, is underestimated. I am not writing this to complain. I want to send a message to clubs, federations, and media people: we need a data standard. We don't need expensive satellite and AI systems, just a uniform template for each match: starting lineup, tactical formation, number of touches, completed passes, distance covered. These data can be recorded with the naked eye and cross-checked. When we have them, journalists like me will write more accurately, coaches will adjust more sensibly, and fans will understand football more deeply. But I also know that will not happen soon, because most stakeholders do not see immediate benefits. Money in Vietnamese football still flows into player contracts, not into analysis rooms. Training sessions remain semi-secret, and numbers stay in the heads of a few assistant coaches. Without data, all tactical discussions are just emotional arguments. I have watched many heated debates on social media, where each person offers an opinion without any data. They are like blind men touching an elephant. Today, sitting in a small café in Nha Trang, looking out at the sea, I still hope. The young generation of sports media now is much better at technology than me. They can use statistic apps and video analysis. But they are also easily seduced by the glamour of foreign data sets, applied mechanically. I want to remind them that Vietnamese football has its own characteristics: uneven pitches, harsh weather, different player stamina. Numbers must be read in that context. And more importantly, they themselves must collect and verify, not wait for a data source to fall from the sky. I often tell myself: “The truest beat is not in the stands, but under the feet of those early training sessions.” The empty analysis I received this morning is like an empty stadium. It reflects nothing about the match, helps no one understand more. But that emptiness gives me a chance to say what I believe matters. We don't need more empty commentary. We need real numbers, recorded with effort and care. Only then will football tactics become a science, not just a pub story. I will continue to go, observe, and write in my own way. There will be days when data remains scarce, but the patience of a man who has lived with football for 46 years will not run out. I believe that one day, clubs will realize that investing in data is as important as investing in players. And then, clear, evidence-based analyses will replace meaningless blank pages. The pitch has waited, and the heart is waiting too.