Vietnamese Athletics in the Regular Season: When Data Goes Silent, the Writer Has to Listen Differently

2:14 a.m., Beijing, mid-November. I opened the file a colleague had sent over from home: a nine-part deconstruction, numbered one through nine, each section with a bolded heading, a three-column table, an analysis conclusion, an evidence block, a hidden-information note. It looked thoroughly professional. And almost every data cell in it carried the same three characters: N/A.

This performance: N/A. Against the world record, the Olympic record, the continental record, the national record: N/A. Qualifying status: N/A. Season ranking against contemporaneous rivals: N/A. Personal-best progression curve: N/A. Injury risk: N/A. Even the reference-point field said N/A.

I sat looking at that file for a long while. At first I thought it was a broken product. Later I understood it differently: an empty analysis sheet is not the failure of the analyst. It is a diagnosis of the entire data-production system standing behind it. For Vietnamese athletics in a regular season, that diagnosis says more than any results table.

A season with no medals, but with fates

Athletics lives most of its life in the years when no major Games take place. The four-year cycle pours all its light onto the SEA Games, the Asian Games and the Olympics, yet the years that decide an athlete's fate are the other ones: national championships nobody streams live, internal testing sessions at training centres, and time trials run against a hand-held stopwatch on a track that has never been certified.

A typical regular season in Vietnam includes the national championship, the national junior championship, a few age-group meets, a handful of invitational events in the region, and overseas training camps for the priority investments. None of these events publishes 200-metre splits, wind readings, track temperature or competition shoe specifications. Result sheets usually stop at the final mark and the placing.

The 31st SEA Games were held in Hanoi in May 2026, Vietnam topped the overall medal table, and athletics was one of the largest contributors. It was the Games with the biggest domestic media presence in memory. Yet when I went looking for public data from the middle-distance finals that year, what I found was still the finishing mark, with no 400-metre rhythm, no wind index, no note on the track surface.

When a source contains no unit of measurement, an analytical tool is forced to return N/A. The output is a document that is neatly laid out, headed, boxed, and says nothing. What I want to do here is read those empty boxes as a source in their own right. The results sheet is where the race ends, but most of the story sits underneath it.

The rhythm that never gets recorded

In 2026, at sixteen, I was writing for a rising sports platform in Hanoi. I chose to analyse the men's 1500m final at the national youth championships: the runner in an inside lane deliberately conserved energy through the first 800 metres, sat sixth after two laps, then produced a decisive kick over the last 300 metres to win. I watched twenty-four tape recordings, tracking every stride, timing the splits frame by frame to reconstruct the rhythm. The male editor read the draft and told me flatly that girls do not understand tactics.

The piece went on to reach twelve thousand reads, six times the section average. But the thing I kept was not that number. What I kept was the feeling of having to watch a five-minute race twenty-four times, simply because nobody publishes per-lap pacing.

They told me girls do not understand tactics; I wrote so they would have to read it again. Since then, before analysing any middle-distance race, my first task is to rebuild the pacing by hand: how many seconds for the first 800 metres, how much was lost in the middle section, how much was left for the final 300. That method reveals that a runner can finish with an excellent mark while distributing effort completely wrongly, and, in reverse, that a modest-looking mark can come out of a very tightly calculated race.

Based on my experience following domestic and regional athletics over nine years, most 800m and 1500m races in Vietnam exist only as video, not as data. That means every public tactical analysis of domestic middle-distance running is, in substance, guesswork. The same problem applies to Nguyen Thi Oanh, famous for contesting multiple finals on a single day at the 31st SEA Games. Her effort distribution in those races could technically be broken down lap by lap, but the public data trail does not allow anyone to do it from a distance.

The wind and the sky nobody records

In athletics, a mark has value only alongside the conditions that produced it. In sprints and horizontal jumps, the wind reading is a mandatory part of the result: above two metres per second of tailwind, a mark cannot be ratified for a record. International result sheets always print that index. Domestic result sheets usually do not.

The consequence is that a 100m run in a strong tailwind and a 100m run in still air can appear on the same ranking list with nobody able to tell them apart. When I read domestic aggregate tables, I always ask the same questions: was there wind, was the surface certified, and when was the measuring device last calibrated. With no answers, every comparison between runs inside a single season is symbolic at best.

Altitude creates a similar situation. Some mountain-province tracks offer a clear advantage in sprints and throws, while low-lying tracks work against endurance events in the hot months. If a result sheet omits venue, altitude, temperature and humidity, then a reader outside the system is comparing things that do not share a unit of measurement.

The dividend of the sole

Since carbon-plated shoes became standard among elite athletes, every cross-era comparison of marks has become harder. The same athlete, the same training load, the same race plan, can run faster purely because the sole structure changed. That is an equipment dividend, and it is baked into the finishing mark.

World Athletics subsequently introduced sole-thickness limits for road and track shoes, precisely as records were falling in succession. Setting that limit was an admission that a mark is no longer purely a matter of the body. Yet in domestic data we almost never record which shoe an athlete wore, how thick the stack was, or whether it had a spring plate.

The consequence is not about disparaging results. The consequence is that when a young athlete improves very quickly within one season, we have no way to separate the part of the gain that came from training from the part that came from equipment. And without that separation, we will invest in the wrong place next season.

Unratified marks and the social-media fever

There is one particularly dangerous class of result: the training mark. An internal test, a timed run inside a session, a clip shot on a phone, and within hours an unratified mark becomes the topic of the day in fan groups.

I have kept a private list of such marks for years. It is useful for exactly one thing: showing how rarely a training mark converts into a genuine competition mark. The conditions inside training differ fundamentally from competition: no round pressure, no second run a few hours later, no stands, no electronic timing officials.

In Vietnamese athletics, this type of result surfaces regularly before every major Games, and it always manufactures expectations without a foundation. I do not classify it alongside competition marks. I do not delete it from analysis either, because a training run still says something about an athlete's physical base. I simply annotate it with a question mark.

The small-sample trap

One beautiful race is not a level. This is the most easily overlooked point of a regular season, when each athlete starts so rarely and each outing is treated as a declaration of ability.

The three indicators I always place side by side are the personal best, the season best, and the spread across the athlete's three fastest runs of the season. If the personal best is spectacular while the season best is much slower, that is a signal about condition or racing schedule, not about ability. If the three fastest runs sit close together, the athlete has a stable base. If they are widely spread, we are looking at somebody with a high ceiling and low precision.

In a country with a limited supply of certified tracks, athletes do not get enough racing to generate a large sample. That is a shortage of opportunity, and it makes every conclusion about ability fragile. During 214 days without competition, I learned to hear the pulse of persistence. But in that same stretch I also learned that persistence cannot substitute for competition data.

Where the depth actually sits

When assessing the strength of an athletics nation, people usually look only at a few headline names. In Southeast Asian men's sprints, the gap between the leading group and the second group is visible on any ranking list. But a genuine comparison needs three layers: peak strength, group depth, and the youth pipeline. Most public analysis has only the first layer, because the other two have no data.

Group depth decides team results: how many athletes reach finals, how many hit entry standards, how many can step in when the leader is injured. The youth pipeline decides what happens four years from now. No domestic published table tracks those two indicators systematically, so every judgement about the national programme rests on the most visible layer of a stone whose submerged part we never see.

The qualification mechanism makes that submerged part even more important. An entry can come from hitting a standard, from ranking points, or from internal selection. Each path carries a different physical cost. Hitting the standard outright is clean and cheap, but it demands one perfect run at the right moment. Chasing ranking points requires high competition density, and high density grinds the body down. In a regular season, that choice is the single biggest strategic decision of an entire national team, and it is almost never explained in public.

The contrarian angle: heat maps are the new divination

A belief is spreading across the industry: gather enough data and the answer will present itself. Heat maps, radar charts and composite indices multiply, delivering a sensation of understanding without producing understanding.

In athletics the problem is more serious: the indices that render most beautifully are rarely the ones that matter. The fact that a 400m runner went through the first 200 metres 0.3 seconds faster than last season is valuable information. A composite index rising from 72 to 78 points is not, because it merges pacing, stride frequency, reaction time and form into a single figure, then assigns it a weighting nobody can verify.

The paradox is that the more sophisticated the tool, the easier it becomes to ignore the conditions behind the data. Transparency is not publishing a lot of numbers. Transparency is publishing the conditions that produced those numbers: how much wind, what shoe, which run of the day, how long since the previous one. When conditions are stated, readers can judge for themselves. When conditions vanish, writers can only pass on other people's expectations.

What worries me is not that we lack data. What worries me is that we have learned to cover the gaps with charts, and are slowly forgetting that those gaps are the biggest question of the whole season. People remember records; I remember legs collapsing after the finishing gun, and the N/A boxes nobody bothers to fill.

What I carry into next season

Before every new round, I will ask four questions: does this athlete have per-lap splits, were the competition conditions recorded, did this mark come from competition or from a training session, and is the foundation behind it three runs or one. If all four go unanswered, I will write exactly that, rather than filling the blank with a plausible guess.

An athletics nation cannot be built on plausible guesses. It is built by people willing to record the unknown as unknown. Is anyone among us patient enough to read a results sheet with most of its boxes still empty, and still understand that this is where every honest story begins?