The Pool Without Data: When a Sports Writer Must Learn to Say 'I Don't Know'

The Pool Without Data: When a Sports Writer Must Learn to Say 'I Don't Know'

I still remember that summer afternoon in Nha Trang, sitting in front of the screen with my notebook open, waiting for a women's 200m freestyle final. The race began, I pressed my stopwatch, recorded every wall touch, every stroke. When it ended, I realized the results board on screen did not match what I had just counted — not off by a hundredth of a second, but off by nearly a second and a half on one lane. I sat there, fingers on the keyboard, and the first thing that surfaced was not "what will I write", but "do I have the right to write anything when my own data isn't trustworthy". That day I did not write. I called a coach, verified, and discovered my screen was delayed by nearly two seconds. That lesson has followed me my whole career: in swimming, the most dangerous thing is not missing data, but data that looks complete while actually being hollow.

That is why when I received a deep analysis of swimming whose input data section was entirely blank — no athlete names, no distances, no times, no events — I did not throw it away. I read it like a mirror. That report called itself a "framework shell", a diagnosis of a data-pipeline failure rather than a professional judgment. And what is worth noting is this: it was honest. It did not invent a swimmer, did not conjure a record, did not attach a story to fill the void. In an age when everyone wants content, that silence is a luxury.

The context here matters more than it appears. Vietnam's sports media industry lives in a cycle where every empty day is a day fallen behind. An average sports news site must publish dozens of articles a day, and swimming — a sport we only truly remember once every four years when the Olympics knock — is often treated as a filler item between football bulletins. When there is no match, no name, no number, the writer's natural reflex is to invent a plausible-sounding story. That is not malice. It is pressure. And that pressure, over time, erodes the very thing we need most: the reader's trust.

I have stood on both sides of this line. In 2026, when I was nineteen and still an intern, I mispronounced Kylian Mbappé's name three times in a row on local radio. Listeners mocked me on social media. I spent a month rewatching every France match, recording international commentators' voices, practicing against UEFA's phonetic chart. Since then, before every match I write my own player glossary, checking pronunciation across three sources. From a single mispronunciation during a World Cup, I understood that football does not begin with the foot, but with the ear. Swimming is the same — it does not begin with the water, but with a number verified to the hundredth of a second.

Yet swimming has a particularity that makes it entirely different from football. Football hands you raw data instantly: passes, pressing counts, possession rates. Swimming does not. A swimming final unfolds in under two minutes, and most of the important information lies where cameras do not point. Reaction time is measured in hundredths of a second, but it is only the beginning. The underwater phase after the start — where swimmers reach their highest speed of the entire race — is almost never shown long enough for viewers to count dolphin kicks. Then come the turns, where a precise flip can save half a second, and the finish, where a wall touch with the full palm or just the fingertips decides a medal.

Sitting there pressing my stopwatch for each lane, I learned that the real data of swimming is split data. A swimmer completing 200m freestyle in 1:55 tells you nothing. What matters is how fast they swam the first 50m, whether the second 50m was faster or slower, and whether they held or collapsed over the final two laps. In the 400m and 800m, split structure is the only tactical story worth telling. A swimmer who goes out too fast in the first 100m is digging their own grave; one who swims a negative split is telling you about energy distribution and psychological endurance. Pressing data does not lie, but it knows how to whisper the name of a star still fast asleep — and in swimming, those names are often in lane 1 or lane 8, where nobody bothers to point a camera.

I learned to read swimming from another mistake. In 2026, when stadiums fell silent due to the pandemic and I shifted entirely to watching on screen, I was struck by a player constantly moving off the ball in a different sport — Federico Chiesa at the Euros. I pressed my stopwatch, counted 34 pressing actions in 90 minutes, the highest of the match, and wrote "Chiesa — The Fire Who Is Not a Star". It was shared by a sports newspaper. But what I kept was not the fame, but the method: combining self-counted data with emotional storytelling. Applied to swimming, I realized that a hand-recorded split table carries more weight than a whole paragraph of literary climax, because it cannot be faked. You can invent a beautiful sentence. You cannot invent a number your own eyes just saw.

So what happens when the data is absent? This is where the story gets interesting, and also where I must stand on the hardest side of the writing profession. When I received that empty analysis, the first reflex of a greedy writer is to fill the gaps. I could write about Katie Ledecky as if I had watched her swim yesterday. I could construct a story about a young generation of Vietnamese swimmers reaching out to the wider sea. I could discuss doping concerns in international swimming, VAR review times in football cooling the rhythm of a match, financial pressure weighing on sporting decisions. All of these are true in their own way. But they would be truths shoved into a framework that does not belong to them. And the reader, even without saying so, would sense the artifice.

There is a principle in sports analysis I call the "empty pool principle": when there is no one in the water, do not create a swimmer to swim in it. The blank report I read followed this principle with a severity bordering on the extreme. In every analytical dimension — technique, performance, competition system, world landscape, rules and anti-doping, athlete career, risk, public narrative, and industry ripple — it stated clearly: "insufficient information, cannot assess". It personified no number. It conjured no star. It admitted the fault lay in the extraction layer, not the analysis layer. And the last thing it left was a procedural recommendation: re-run the extraction step, restore the title and source fields, then resubmit.

That is a way of behaving worth learning. In our profession, admitting "I don't know" is treated as weakness. But the truth is the opposite. A writer who dares to say "I don't know" is a writer who has checked enough to know what they are missing. The one who always appears to know everything is usually the one who has never pressed a stopwatch.

I witnessed such a moment at the Paris 2026 Olympics. After the women's football final between Spain and Brazil, I was allowed into the press room. When I asked about the 4-2-3-1 tactical formation in expressive language, an older male reporter whispered: "what does a woman know about pressing". I did not argue. That night I wrote a match report, describing Spain's team as a symphony: the attackers were the high notes, the midfield the low register holding the rhythm. The piece became one of the most-read articles on the Asian Football Confederation's homepage. But what I am proudest of is not the read count. It is that I did not lower myself to answer one prejudice with another. I answered with data and with art, not with bitterness.

Returning to swimming, I believe the sport needs exactly this spirit more than ever. Every sport is its own universe, and I am fortunate to be a traveler between those orbits. But an honest traveler must know when they are lost. Vietnamese swimming has swimmers known to domestic media, but the world of data behind them is almost entirely unexplored. We can name an athlete, but we do not know their 50m split, their average stroke rate, their turn efficiency. And when we do not know, we tend to fill the gap with emotion. Emotion matters — I live on it — but emotion cannot replace truth. An article about a swimmer with no trustworthy number is just a sad poem sent to the wrong address.

The most counterintuitive thing I want to say here is this: emptiness has value. When I encounter an analysis that admits it has no data, I do not see failure. I see an anchor point. It tells me exactly what I need to go find: a name, a distance, a time, a competition. In an industry where everyone rushes to assert, the one who dares to stop and say "wait, I have nothing yet" is protecting an entire information ecosystem. They are refusing to pump muddy water into the pool that readers will dive into and never find the bottom of.

There is a greater temptation I want to name: the temptation to appear profound. When there is no data, weak writers switch to a philosophical register. They speak of "the essence of sport", of "the human journey", of "the limits of belief". These sentences sound good, but they are a form of evasion. I have written that way. I have filled gaps with beautiful metaphors instead of hard truth. And I remember an older reader in Da Nang writing to me: "You write beautifully, but after reading, I still don't know how many seconds that person swam." That letter corrected me. Since then, my principle has been: every emotional paragraph must be accompanied by a data paragraph. Every metaphor must have a number at its back.

I also learned that meticulousness is not a secondary virtue, but the backbone of the craft. When I hand-counted Chiesa's pressing actions, I had no tools but a stopwatch and patience. But that patience created a piece that stood apart. In swimming, that patience demands even more, because you must learn to see the invisible: the depth of the underwater phase, the angle of the flip turn, the breathing rhythm between laps. No software teaches you that. Only sitting down, watching again and again, and taking notes.

At 27, I am now a mid-level editor at a sports television station, leading a team of five young reporters. They call me "chị lửa" — sister fire — because I always let them try crazy ideas. But there is one thing I never allow: fabricating data. In a project for the 2026 World Cup, we tested a "meme-commentary" model — every minute of the match broadcasting a short video capturing players' expressions, with a humorous caption that still kept the tactical facts right. The video series reached 4.5 million views in the first week. But what I stressed to the team was: humor is fine, falsehood is not. A false meme spreads faster than a correct analysis, and the price is the trust of an entire generation of viewers.

So when I look at an empty swimming analysis, I see a reminder. It reminds me that a writer's limit is not how much they know, but how honest they are about what they do not know. A pool without data is not a failure. It is an opportunity to prove that we have enough backbone to wait. To wait until there is a real name, a real distance, a real number. To wait until the water has a real swimmer, and that swimmer has a real story to tell.

Hearing the stands roar, I know I am writing with sweat, not just ink. But that sweat only has value when it falls onto something real. And if there is nothing real to write yet, then the right thing — the bravest thing — is to close the notebook, turn off the screen, and say to myself: today I have nothing. Tomorrow I will go and find it.

That is perhaps the greatest lesson an empty pool can teach a sports writer. Not how to fill the void, but how to respect it. Because in sport, as in swimming, the most precious thing is not the speed you achieve, but the honesty about the distance you have swum. And if you have not swum a single meter yet, the only right thing is to admit it — then step into the water.