Vietnamese Badminton and the Data Deficiency Problem in Sports Analysis

Recently, a preliminary analysis of a badminton match was sent to me with a request for evaluation. When I opened it, I only saw a structure with filled framework but almost empty content: no title, no source, no information about players, no tactics, no data. That reminded me of my own saying: "When the stadium is empty, I hear more clearly the rhythm of the match." But this time, the stadium was not only without spectators, but also without shuttle and racket. There is a paradox in Vietnamese sports: we have a lot of passion, but very little data. News reports often stop at the score, a few generic comments, then move on to transfer rumors. When it comes to a tactical analysis worthy of the name, the writer has no material. Like that preliminary analysis, it was not wrong in its structural framework but wrong in its body: there was not a single piece of data to cling to. Let's look at developed sports nations. In Japan or South Korea, each major badminton match is statistically detailed, from shot speed, movement position, athlete heart rate, to point-scoring efficiency in each rally. With these numbers, analysts can dig into the "why" and "how". In Vietnam, fans who love badminton often have to review videos themselves, count unforced errors manually, and draw their own shot maps. This is not wrong, but it cannot replace a professional data system. I have spent nearly 40 years as a commentator, and I have realized that sports is not only about emotion but also about rhythm. The rhythm of a match is created by concrete situations, by steps, eyes, the spin of the shuttle. To read the rhythm, writers need data. Without it, every analysis is just subjective, easily falling into a rut of "writing for the sake of writing." An empty news piece like the one above is a product of journalism that does not value data. It hurts readers, hurts the writer, and hurts the development of the sport. Our story is not just about an incomplete analysis. It reflects a larger reality: Vietnam does not yet have a sufficiently strong sports data bank. In the world, many federations have opened data warehouses to the public; fans can search head-to-head history, form on different surfaces. In our country, numbers like that often lie scattered in the memories of a few former national team members, or in the old notebooks of some journalists. When the older generation steps back, the younger generation has nothing to inherit. But I am not talking about building a mega system. I am talking about how each writer can equip themselves with an "eye for reading matches" by actively collecting data from available sources. An official badminton match may not have much open data, but from video, we can count the number of cross-court shots, successful net drops, win percentage when serving first. The issue is whether the writer has the patience to sit down with 200 pages of notes like I did during the pandemic season. I remember when writing the series "Football in Silence", I watched old matches repeatedly just to observe how a full-back moved. As a result, I found a correlation between starting position and number of goals. In badminton, the same can happen. Analyze how Nguyen Thuy Linh moves in long rallies, or count how many times Le Duc Phat attacks to the opponent's forehand. Those numbers would create a story far more vivid than a boring narration. More importantly, writers need a habit of systematic note-taking. I always teach my young colleagues: "200 pages of notes can't save a season, but they can save memory." Yes, a season may be a failure, but if we record every situation, every decision, then later when we need to analyze, we'll have material to return to. If we just write without a solid base, like the story above, a beautiful analytical framework can't be filled. Modern sports are moving toward datafication. In football, clubs use GPS to measure distance covered by each player; in athletics, sensors measure running cadence and leg angle. Badminton is no exception: at Super 1000 events, umpires and Hawk-Eye systems provide millimeter-precise landing positions. But at domestic tournaments, such tools are still too expensive. Therefore, Vietnamese sports journalists need to utilize what they have: their eyes, analytical skills, and hunter-like persistence. As someone who has lived and worked in both China and Vietnam, I often see differences in how these two sports cultures handle information. In China, major badminton matches often have a team of experts analyzing tactical formations right after the match. In Vietnam, at best, viewers get a few minutes of highlights with short commentary on TV. Many young fans wanting to learn deeply have to search foreign forums themselves. This is fertile ground for those who dare to write with numbers. I have repeatedly emphasized to my students: "Every shock comes from a child we didn't see in time." In sports, upsets often come from young players rarely covered by media. To spot them, writers need to follow many youth tournaments, track form across seasons. Without data on these players, you will never dare to bet on their name in an analysis before they become a phenomenon. That is why, right now, every sports journalist should build their own number notebook. Let's be direct: data deficiency does not only come from writers, but also from the federations' regulations. Many domestic tournaments do not publish official statistics, such as number of direct service points or wins in long rallies. This is a major barrier for the press. But in that context, writers can still use "folk techniques": manually counting, filming, note-taking. I have done that throughout my career, and I affirm it is much more effective than waiting for others to provide information. Let's return to the story of the empty analysis. Without data, analysis is like writing a persuasive essay without evidence. No matter how beautiful the prose, it won't be convincing. Sports writers should remember: Vietnamese audiences are not dumb; they are just starved for information. When I published a series on Mancini's tactics on an online newspaper, I received more feedback than for ordinary match reports. That proves the market always thirsts for quality content with a data backbone. So what should we do? First, each newsroom should have a separate column for data analysis, where journalists can publish self-collected statistics. Second, each writer should practice "reading rhythm" through video, willing to spend hours on one point. Finally, the fan community should contribute by creating wiki-style open data repositories. Only then will our sports articles no longer face the problem of empty sources. I want to emphasize that sports analysis should not stop at who won or lost. As journalist Dong Lu said, the beauty of commentary is creating discussions. And for discussions to have depth, we need data to debate. If not, we are only talking about emotions, and no one dares to assert right or wrong. That preliminary analysis taught me a lesson: the skeleton can be perfect, but the soul cannot exist without information. The day I followed Selemon Barega winning gold at the Tokyo Olympics, I wrote about his decisive burst at the right moment. No one could understand it just by reading the result. But when I shared numbers on his acceleration distance and peak timing, everything became clear. Badminton is the same. A player's smash can reach 400 km/h, but what matters is where the shuttle goes, and where the opponent is positioned. Those details are the emotional touchpoints for readers. I know there are many young players in Vietnam eager to reach the world. They need journalism that accompanies them with understanding, not just with pretty words. If we do not improve the data deficiency, those talents will remain lost in a noisy information sea. That empty analysis is a warning: if we do not change, there will be many more blank papers with ink. In my notebook, I always set aside a page for unpredictable moments. That page often begins: "Every shock comes from a child we didn't see in time." That child could be a young player in a provincial tournament, or could also be a new idea from a journalist who dares to spend time collecting data. Today, after receiving that empty preliminary analysis, I want to add one line: "Emptiness is not a full stop, but an invitation to start filling it." For young sports writers, I have one piece of advice: start with the smallest things. Want to analyze Nguyen Thuy Linh's match? Time each rally, note where she stands, how many times she returns deep. Want to write about a new talent? Go to youth tournaments, observe with your own eyes. No one hands you data, but you can absolutely create it yourself. When you have data in hand, your analysis will never fall into the state of "letters running on paper but soul elsewhere". When the stadium is empty, I hear more clearly the rhythm of the match. But to hear that, I must write hundreds of pages of seemingly meaningless situations. Today, I sit before an empty analysis again, but I believe that if the writer knows how, they can turn this emptiness into a full musical score. Sports don't lack stories; we lack the tools to tell them. And the first tool, cheapest but most effective, is the habit of note-taking and seeking numbers. Do it today, so that you never have to write a piece with only a framework and no soul. In summary, the biggest lesson from that analysis is: without numbers, sports journalists are only blind storytellers. We need to light our own torch and move forward, not sit back waiting for others to illuminate. Vietnam has many sports talents, but will we ever understand them if we don't have data to analyze? I leave that question open for everyone who writes about badminton and sports in general.