When Data Goes Missing: Lessons from a Powerless Analysis

I have just read an analysis titled "Insufficient Information for Analysis." It is a meticulous document, going through eight different dimensions – from competitive value to health risk – but all the cells are blank. No information about the match, no player names, no dates, no numbers to dissect. The author seems puzzled: "The request cannot be fulfilled with the given input." In Beijing, when I was a track and field journalist, I have submitted many analyses like that – but not because of missing data, but because I chose to wait for another two thousand weather samples. However, this document is not a sports article. It is a desperate letter from a modern analytical system starving for lack of data. And it made me look back at Vietnamese football – where for many years, we have become accustomed to reports filled with emotions, to comments about "mistakes" or "bad luck" without ever a table of published statistics. Think about a concrete match. A Vietnamese team controls the ball 63%, but nobody knows how many kilometers they ran in total, how many sprints they made in the opponent's half. A striker scores after a counter-attack, but the media only say he "positioned himself intelligently," without mentioning the 40 meters he sprinted at maximum speed in the three seconds before receiving the ball. Even basic statistics about passes in the final third rarely appear. Meanwhile, behind the scenes of major leagues like V.League is becoming more professional, but public data is like a dense forest where each team hides a secret. Analysts are forced to write empty reports like the one I read, not due to lack of ability, but lack of raw material. The analysis has a clear evaluation framework: competitive value, industry value, timeliness value, and reference value. No dimension earns even one star. Competitive value 0/5, industry value 0/5 – because there is no data on the match, on the organization, on the market context. If we apply this framework to many Vietnamese football articles appearing on social networks, would they score anything? Ask yourself: does that article provide any tactical insight that readers cannot see from watching the match live? If not, it is merely a recap, not an analysis. Many articles up to now only retell what happened: who scored, who got carded, who was substituted. That is like a doctor describing a wound without taking any X-ray – the patient can see the blood, but not know if the bone is broken. One of the signals the analysis points out is "data emptiness" in the pre-analysis stage. It warns about the lack of an expert label: is this martial arts modern combat or traditional martial arts? This reminds me of a similar issue in Vietnam: we remain ambiguous between "high-performance sports" and "mass sports" when evaluating a sporting event. A marathon in Da Nang can be promoted as a tourism event, but lacks data on average heart rate, pace distribution over each kilometer, or the impact of humidity on performance. Organizers say they have 10,000 participants, but nobody knows how many actually finished the distance, or the dropout rate. Then, when an incident occurs, all we get are generic apologies, not a specific dataset to find the cause. The story becomes even more serious when it comes to referees and VAR. In last season's V.League, there were controversial decisions causing strong reactions from teams. But those controversies are mostly based on emotions, even on club colors. No article ever systematically analyzes the average review time of VAR, the frequency of referees overturning decisions after viewing the screen, or the average distance from the referee's position to the point of the foul. The powerless analysis above emphasizes transparency: "Every claim about data needs a clear source." If a referee makes a controversial decision, are we allowed to know the opinion of the VAR team? Possibly not, because FIFA regulations do not allow publicizing the audio of the discussion. But the very lack of transparency creates fertile ground for rumors, eroding fans' trust. I recall a record I once followed. The world record in the 100m at London 2026 was confirmed, but I spent two weeks reviewing camera angles from various broadcasters, analyzing stride frequency and reaction time of each athlete. My article was five weeks late compared to other newspapers, but it had value because every number was verified. In Vietnamese football, we have too few journalists willing to sacrifice timeliness to wait for a complete dataset. Every newspaper wants to publish news on the same day, so they publish what they get from press conferences, from diplomatic answers of coaches. They never ask: where does this data come from? Is it collected by a professional system, or just estimated by a media officer? Therefore, a statistic like "10 shots on target" can be a meaningless number if 'on target' is not clearly defined – because some shots that go wide might hit a defender and be counted as on target under some interpretation. There is a popular viewpoint that sports is an art of imperfection, that the lack of precise data is part of its appeal. But I argue that this is a fallacy. Imagine if medicine operated the same way – no blood tests, no scans, just listening to the patient's description. It might be interesting, but nobody wants to be a patient in such a hospital. Sports is the same. Athletes, clubs, sponsors are investing millions of dollars, yet when we need to analyze a mistake, we only have gossip. The lack of data is not a personal tragedy; it is a betrayal of those who sweat on the pitch. Look at a typical V.League match. The home team presses high, but pressure is not sustained evenly. They have vivid early minutes, then fade, then rise again in the closing stages when the opponent is tired. A data analyst would record precisely when the pressure peaked, the average interval between pressing actions, and whether the team got any benefit from those tackles in the opponent's half. But in Vietnamese media, all of that is often summed up in a word: "dominated." "The home team dominated the opponent for the majority of the match" – a harmless sentence without a single number to prove it. Worse, many details like tackles, distance covered, steps sprinted are considered secrets only coaches are allowed to know. We live in a world where football fans of European football can access sites like FBref or Understat to know every pass, but in Vietnam, even data on corner kicks in a match is not consistently published. The analysis above points out that one of the reasons it was powerless is that "Stage-1 deconstruction" had nothing to dissect. In football, the pre-analysis stage is also the stage of collecting raw information: team composition, tactical formation, fitness condition, head-to-head history. If journalists cannot collect this information reliably, then any subsequent analysis is just imagination. I have witnessed articles about a young player with a brilliant performance, but no one mentions that the player ran 2 km less than the team's average. After three matches, the player was injured due to exhaustion, and no one asked whether the lack of training-load data led to this outcome. It is time for a data revolution in Vietnamese sports. Not just publishing a few simple tables, but building an open data ecosystem – where independent analysts, journalists, and fans can access full data on every match, every player. We need a national statistical standard, clearly defined and applied uniformly across all competitions. We need clubs to publish fitness data, distance covered, sprint count, live-ball time, etc., as European clubs have done. We need tournament organizers to invest in optical tracking systems at stadiums, instead of relying on manual reports. Resistance often comes from big clubs, who see data as a competitive advantage. But they forget that a successful league is built not on secrets but on trust. When sponsors and fans cannot see the full picture, they gradually lose interest. The value of a league lies not only in match results but also in its ability to tell stories based on data. And such stories are being discarded or distorted due to lack of official raw material. In my journalism career, I learned that when data is absent, the best course is to stay silent and wait. But nowadays, newsrooms do not allow journalists to remain silent. They must write an analysis after every match, even when the material is missing. The result is hollow articles, powerless analyses like the document I read at the beginning. But that is not the journalist's fault. It is the fault of a system that does not know how to nurture its analysts. They demand delicious meals but refuse to grow vegetables or raise chickens. A big question arises: who will act? The Vietnam Football Federation can compel teams to provide data according to an AFC standard framework. Broadcasters can require commentators to guide audiences with numbers, instead of just using flowing words. And fans themselves – smarter and more sophisticated than we think – can demand a more in-depth sports journalism than clichés. Change does not happen in a day, but every small step counts. Finally, I want to emphasize that data is not the enemy of the allure of sports. It is a friend that helps us understand more exactly what happened on the pitch. When a goal in the 88th minute is disallowed, we need to know how long the VAR review lasted, which camera angle led to the decision. When a player commits a foul, we need to know the distance he covered before that, whether he was exhausted. But for this, we need a solid data foundation. And until that foundation is built, analyses like "Insufficient Information for Analysis" will remain a reminder of the gap between professional appearance and inner substance. The 90-minute match is just a moment; the 300-day cycle is the truth. For Vietnamese football, I hope one day we will no longer have to write such documents. We will have enough data to decode every match, and online arguments will become more civilized, based on numbers rather than fleeting emotions. Let's start small: publish full match statistics, as a way to respect fans' right to know. Not necessarily in a hurry, but definitely start.