Vietnamese Athletics and the Data Gap: What the Scoreboard Never Records

After every women's 800 metres at a domestic Vietnamese meet, I keep a habit that a few younger colleagues call a waste of time. I do not look at the scoreboard. I look at my own hand. The stopwatch has been with me for more than twenty years, its glass scratched, its button worn smooth, and it still records every 200-metre lap. The crowd roars when the winner raises an arm. I bend down and write three lines: lap one, lap two, and the gap between first and third at the ninetieth second of the race.

The official results sheet at most domestic meets carries a single line per athlete: the finishing time. No splits. No closing-lap speed. No top speed. Thirty years behind the changing-room door have taught me that the smell of victory and the smell of tears are not different. Those same thirty years taught me something else: most of what decides a race is written down nowhere.

Athletics lives on numbers, but its data system is sharply tiered. World Athletics publishes results, rankings and entry standards. Continental federations publish calendars and formats. National federations publish domestic championships. Sitting between those three tiers is the most decisive and thinnest layer of all: per-lap splits, top speed, stride rate, reaction time off the gun.

In Vietnam that layer exists almost only at meets with professional timing systems, meaning international events held at home or continental championships the national team attends. The rest of the season, comprising the national championships, junior meets and internal time trials, leaves a very thin trace: one time, one placing, and little else.

This matters because the Vietnamese athletics season is built around a four-year cycle, and each cycle has two or three anchor points: the Southeast Asian Games, the Asian Championships, and the Olympic or World Championships qualifying route if the team holds a quota. Vietnamese athletics has long built its regional standing on race walking and a handful of women's jumping and throwing events, alongside short and middle-distance mainstays such as Nguyen Thi Huyen in the 400 metres and 400 metres hurdles, and Nguyen Thi Oanh in the middle and long distances.

Nguyen Thi Oanh is the clearest illustration of what data says when it is fully collected. At the 31st SEA Games in Hanoi in May 2026, she won three individual gold medals in the 1500 metres, the 3000 metres steeplechase and the 5000 metres. Read the medal table and you see the story of one athlete. Read the splits and you see the story of an entirely different way of distributing effort from the rest of the field.

The road into a major championship is also a data problem. World Athletics offers two doors: hit the entry standard, or accumulate enough world ranking points. Each country may enter a maximum of three athletes per event at the World Championships and the Olympic Games. For a federation with few athletes who hit standards, the second door becomes the realistic route, and that route demands something Vietnamese athletics does not yet have: a dense, calculated competition calendar and a data system reliable enough to know when to race and when to rest.

The crux is this: a federation that does not keep a multi-season performance series cannot properly assess itself. The personal progression curve, meaning the best mark year by year, is the cheapest and most powerful diagnostic tool the sport possesses. For an 800 or 1500 metres runner in the developmental phase, a reasonable annual improvement usually falls between one and one and a half per cent, then flattens as the body meets its ceiling. A jump three times the historical annual gain is a signal worth examining, and it can only be examined when a continuous series exists.

Vietnam does not yet have that series at sufficient length. National championship results sit scattered across the years, formats change, event programmes change, and for many athletes a performance trace appears only when they are sent abroad. The consequence is concrete: coaches lack the curve that would let them compare an athlete with that same athlete three years earlier.

The second neglected layer is competition conditions. An athletics mark is bound tightly to the circumstances that produced it. World Athletics rules set the maximum legal wind at +2.0 metres per second for sprint, long jump and triple jump events. Beyond that threshold a mark still counts, but it cannot be ratified for record purposes. Altitude above one thousand metres delivers a clear advantage in sprints and jumps because air resistance falls. Shoes with a rigid carbon-fibre plate, within the current regulations, also generate a dividend the clock never records.

A medal won in favourable conditions loses nothing in status. It loses something in predictive value. This is the distinction data analysts call the gap between competitive output and true capability. A sport that wants to move forward has to separate the two, because the next cycle's plan is built on capability, not on placing.

The third layer, and to me the most regrettable, is rhythm in the middle and long distances. An 800 metres race is not decided in the final second; it is decided in the first two hundred metres, when one athlete forces the pace or lets it drift. A positive split, meaning a faster first lap than last, carries completely different tactical meaning from a negative split, even when the finishing times match to the hundredth of a second. Without splits there is no real tactical analysis, only emotional commentary.

Race walking, an event where Vietnam has a solid regional tradition, is the counter-example that shows how much technical data matters. Here the result is not decided by the clock alone. Three independent judges can issue red cards for loss of contact with the ground or for a bent knee; three red cards from three different judges mean disqualification. Cadence, ground contact time and knee extension on each stride are measurable variables, and they are precisely what separates an athlete of international standard from one who is merely fast at home.

Finally there is the cost calculation. A place at a continental championship or an Olympic qualifying meet is not free. It consumes a block of fitness, a long flight, several days of time-zone adjustment, and sometimes a race the athlete must skip in their strongest event. For squads with relay runners, the trade-off between individual events and the relay is an annual strategic decision, and it can only be made correctly when both sides of the trade-off are quantified.

Let me state plainly something few people want to hear in a season review: results at regional level do not convert directly into capability at continental and world level. A Southeast Asian gold medal can be produced by a mark well below the entry standard for the World Championships. That does not diminish the medal in the hands of the athlete who won it. It simply means a programme designed to maximise regional medals will quietly starve the events that need years to produce a result.

The second risk is how we read the silence of the data. When an athlete leaves no anomalous trace in the record, that silence speaks only to the thinness of the record, not to cleanliness. In athletics analysis, an empty return carries no information. It must be filed under not assessed, never under checked and clear. I learned that principle standing in a changing-room corridor, listening to stories that never reached print.

People ask what women understand about tactics. I answer by counting an athlete's breathing from the stands, more accurately than a stopwatch. Not to win an argument, but to point out that tactics are a form of data that only reveals itself to someone willing to sit still long enough. A federation that wants to improve is the same: it needs people willing to sit with old results sheets rather than only photographing the medal table.

We need women who sit in the wrong seat, stand in the wrong place, and rewrite tactics in their own voice. For thirty years the things I have trusted most are my eyes, my ears and a notebook that does not know how to lie. Vietnamese athletics does not lack fast athletes. It lacks people who record why they were fast, faster than whom, and faster than their own previous season.