From an empty analysis report, reflecting on data standards in sports

For the first time in my career covering multi-sport events, I received a multi-page analysis report where every field displayed the cold phrase: “N/A – insufficient information.” No numbers, no names, no specific events were submitted. It was an empty input that the analysis system had honestly refused to decorate with fabricated insights. This incident raises a larger question: When sports data is not systematically collected, should we risk making intuitive guesses? I believe the answer lies in a professional principle that every sports journalist and analyst must cling to: when data is missing, say "we don't know," rather than filling the void with gut feeling. In Vietnam, post-match press conferences and statistics often stop at goals, cards, and possession rate. But if we dig deeper, we rarely record distances covered by each player, pressing pressure by zone, or the number of turns in swim races. I have spent countless hours at Yết Kiêu Swimming Pool, timing the breathing strokes of young swimmers, and realized that those tiny data points forge tactical keys. A swimmer may lose the final sprint because of wrong breathing timing, not a lack of endurance. That "N/A" report was, in truth, a powerful message. It was not useless. On the contrary, it teaches us a lesson in transparency: modern sports cannot function on gossip, unverified news, or numbers crafted just to fill the page. Without precise on-ground data, every analysis becomes fictional storytelling. I recall the SEA Games 31, when a reporter asked for my impression of a Vietnamese swimmer's technique. I dared not jump to conclusions because I had no underwater camera angles. I could only describe the feeling of standing on the starting block, inhaling the chlorine-laden air, watching each stroke. But a true analysis requires more than that — it needs metrics on acceleration, stroke rate, and kicking depth. When such data is absent, the correct response is to refuse analysis, or at least to label the output as "subjective opinion." This applies not only to swimming but to every sport—from football's duel situations to basketball's complex pick-and-roll patterns. One may argue that in developing nations like Vietnam, investing in sophisticated data systems is a luxury. But the cost of missing data is even higher. It leads to wrong decisions in transfers, tactics, and even injury management. I watched a young footballer forced to retire due to a groin injury that had been underestimated because no MRI data or movement history was available to raise early red flags. Sport, after all, is not just an art; it is a science. An empty analysis report resembles a VAR referee without precise camera angles. When the frame is unclear, the official cannot make the right call. In fact, many matches suffer long stoppages due to VAR delays, making me wonder: in sports, is a slow but correct decision preferable to a fast but ambiguous one? I incline toward slowness with precision—just as the system patiently reported "insufficient information" instead of guessing. I acknowledge that instincts and experience of a seasoned practitioner can rescue a situation where numbers miss. But that is an emergency response, not a daily procedure. Data-driven decision making does not negate the value of a coach's senses; conversely, it frees them from blind speculation. During the transfer window, this lesson hits harder. News about players, fees, and release clauses floods social media daily. If journalists and analysts accept unverified sources as proof, they create a "virtual" transfer market full of fake shocks. I once wrote a story based on "maybes," and received an angry call from a player agent. Since then, I set a rule: every piece of information must be cross-checked at least three times; every number must be traceable. Returning to that empty report, I see it as a wake-up call. If we cannot provide sufficient input for analysts, strategic national decisions in sports will remain stuck. Vietnamese sports federations must invest heavily in statistics, mandate open-data standards, and train specialized staff. Only then can analysts tell the true story of each athlete and each match, instead of facing a gloomy gray N/A. Some may view a report without conclusions as a failed product. But in science, a negative result is also a result. It proves we asked the right question, yet lack enough data to answer. At that moment, if we avoid rushing to conclusions, it resembles football starting with the ear—listening to the ball touching the grass before making a judgment. I want Vietnamese sports analysts to boldly write "insufficient information" when needed. That is not a sign of weakness, but a marker of a growing sports culture rooted in solid ground. When we respect data truth, we build a responsible sports media and a sustainable sport system. Staring at the N/A on the page, I smile, recalling the time I mispronounced a Kazakh athlete's name live on air. I corrected myself immediately, and the audience was forgiving. Acknowledging mistakes does not diminish authority; it builds trust. Likewise, admitting the limits of data is the only way to make analysis truly meaningful. Leaving the blank report behind, I think of the numbers waiting to be illuminated in swimming pools and stadiums across Vietnam. Every second on the stopwatch, every shot, every step can become part of a grand picture. Our duty is to collect them honestly, and when there are not enough, to have the courage to say: I cannot conclude yet. If an empty report can teach us that, then it is no longer empty — it is a mirror reflecting ourselves.