An Empty Analysis Sheet at the Pool: Why Sports Writers Must Learn to Say 'Not Enough Data

At two in the morning on August 13, I reopened my analysis file on the pool. The “domain” field lit up: swimming. The other nine dimensions — starting technique, performance data, competition system, world landscape, rules and anti-doping, athlete career path, risk profile, public narrative, industry ripple — each returned a single line: insufficient information. No athlete name. No time. No competition date. I sat still in a room with only a fan running, remembering what it feels like to stand at the wall at five in the morning with a stopwatch in hand, watching a lane of water wait for one kick. Outsiders would ask what can be written from a sheet like that. To me it is a mirror. Vietnamese swimming has lived for a decade on SEA Games medals and the occasional brush with continental finals, while the data layer underneath is almost always missing. From one mispronunciation at a World Cup, I learned that football does not begin with the foot but with the ear. On the pool deck that lesson changes shape: everything begins with a stopwatch and a results sheet that states the length of the pool. In eleven years of following domestic and international meets, the number of times I have held a complete splits sheet from a Vietnamese competition can be counted on one hand. Most results pages carry only a final time, sometimes not even the pool. That leaves every comparison hanging in mid-air. SEA Games 31 on home water, the Asian Games, then the Olympic qualifying window — each meet has its own frame of reference, and fans receive only one final time. A swimmer two seconds off the Asian record in the 200m freestyle may be improving or stalling; that time says nothing unless it sits beside the same swimmer at the previous meet, in the same pool length, in the same training block. Pool length is the first trap. A national record set in a 25m pool cannot be placed beside an Olympic performance in a 50m pool, because World Aquatics ratifies two separate record systems. Over 1500m freestyle, a 25m pool forces 59 turns; a 50m pool asks for 29. Every turn carries a push off the wall and an underwater glide — speed that costs almost nothing. Skip that detail and a “record broken” headline can be literally true and completely meaningless. Splits are where a performance reveals itself. Without them, a writer knows who touched first and nothing about how. Nguyễn Huy Hoàng took bronze in the 800m freestyle at the 2026 Asian Games, one of the rarest continental medals in Vietnamese swimming. The final time shows an 18-year-old finishing behind Asia's leading group. To know whether he held his stroke rate through the first 400m, whether he opened up over the last 200m, we need every 50m mark — something domestic results sheets almost never provide. Over 1500m the gap between pacing models is wider still. Swimming even from the first length is one strategy; going out controlled for 800m and lifting at the end is another, and both can produce the same final time. For a writer those are different stories: one about discipline, one about a late strike. Without splits, choosing either is invention. Then there is what never gets broadcast. Reaction time for an elite swimmer sits around 0.6 to 0.7 seconds, measured from the starting signal to the feet leaving the block. Underwater travel after the start and after every turn is capped at 15 metres; exceed it and it is a foul. I have had to explain on air why a swimmer was disqualified after touching first, with no surface camera able to show it. The evidence lives in underwater footage, which Vietnamese sports television rarely has. Qualification works the same way. An A-cut grants direct entry, a B-cut depends on quota allocation; the American model takes the top two on the day, many other nations use comprehensive evaluation. The same time can mean completely different things depending on the system. And for teenage female swimmers there is a barrier no results sheet records: puberty. A 14-year-old swims fast, stands still at 17, breaks through at 20 — that curve is common enough that it cannot be treated as an exception. Nguyễn Thị Ánh Viên reached the 400m individual medley final at the Rio 2026 Olympics, the first Vietnamese swimmer to make an Olympic final; behind that moment sit years the clock never describes. Here I part with the majority. Sports media treats an empty cell as a defect to be filled, and fills it with whatever reads smoothly. An analysis sheet returning nothing but “insufficient information” is considered a failure. I see the opposite: it is the most honest report of the day. A piece that states plainly “no splits available”, “pool length unconfirmed”, “source not verified” is worth more than ten pieces asserting that athlete X is at the peak of form. In swimming, every conclusion has to hang on a specific unit of measurement; without one, words are just steam on the water. The subtler trap is what we teach audiences to read. A SEA Games gold is read as proof of a rising swimming nation; in reality it is one marker inside a narrow frame. I run like an athlete and jump between sports like an adrenaline addict, and jumping between them taught me that each has its own unit of measurement — medals in one sport cannot be converted into class in another. Swimming is harsher than football here: in football, feeling can cover part of the data; on the pool deck, the clock forgives nobody. So here is a small proposal, doable from the next piece: end every swimming article with a label, like the nutrition panel on a milk carton — pool length, results source, competition date, and a note when splits are missing. Thirty seconds of typing buys a decade of reusable data. Every sport is its own universe, and I am lucky to travel between those orbits. But every orbit needs a fixed point to measure from, and Vietnamese swimming is missing exactly that point. Who will build it?