Teqball, Karate and the Medal Table Equation: Vietnam's Day at Asiad 20 Through a Data Lens

The bronze medal match in the mixed doubles event ended after just over twenty minutes. Nguyen Hoang Minh Tan and Trinh Gia Nghi stepped away from the teqball table with a 2-0 victory over the pair of Dsouza Quimcy Joaquim and Beg Mohamed Anas Imran of India, delivering Vietnam's first bronze medal at Asiad 20. On the scoreboard, it was two sets won. For me, it was a sequence of decisions executed in less time than a single breath.

I stayed behind after the match and rewound the footage three times. The first time to watch the points. The second to watch the feet. The third to watch the space between the two athletes before the ball touched the curved surface. A bronze medal in a sport appearing at the Games for the first time is not simply a matter of luck. It is the result of a structure, and that structure can be measured.

This is an analysis of the competition day on which Vietnamese sport claimed two bronze medals at Asiad 20, but I will not retell the results in broadcast style. Anyone can read results. What I want to count are the things that do not appear on the scoreboard: the angle of the planted foot, the latency of reaction, the rhythm of movement around the table, and the way a delegation distributes medal expectations between new and established sports.

Teqball is a sport combining elements of football and table tennis. Players use every part of the body except the hands and arms to send the ball back and forth over a curved table. In doubles, the requirement is not only ball control, reflexes and individual technique, but also seamless coordination between two people. The sport was included in the competition programme for the first time at Asiad 20. For a country where the sport is still relatively unfamiliar to the general public, Minh Tan and Gia Nghi immediately making their mark on the continental stage is a fact worth analysing rather than merely celebrating.

I have always made a habit of opening a spreadsheet before writing. With teqball, I had to build the analytical framework from scratch because in-depth data on the sport in Vietnam has hardly been systematised. That is precisely what makes it interesting. When data is thin, the writer has the chance to contribute a reading structure rather than merely repeating numbers.

The first thing to understand about teqball is that the curved table turns every touch into a trajectory problem. A table tennis ball on a flat surface allows players to calculate trajectories relatively simply. The teqball table bends along a curve, which changes the bounce point depending on where contact is made. A touch off by a few centimetres horizontally can completely alter the ball's direction. That is why the sport rewards those who control the contact point, not merely those who kick hard.

In the bronze medal match of Minh Tan and Gia Nghi, I paid attention to how they divided space. The Vietnamese pair kept one player in the base position and the other operating near the net. When the Indian opponents increased ball speed, the Vietnamese pair did not switch positions but changed their angle of approach. The base player retreated half a step, the net player rotated the hips one beat earlier. This small change preserved the defensive structure while still opening counter-attacking lanes.

I counted many exchanges in which the ball was returned toward India using the Vietnamese players' non-dominant foot. That is a sign of relatively balanced two-footed technique. In teqball, being forced to use the non-dominant foot reduces accuracy if the player has not trained sufficiently. The Vietnamese pair used the non-dominant foot as a choice, not as a fallback. That is the difference between players trained within a structure and self-taught players.

Now let us talk about the scoreline. 2-0 sounds comfortable. It was not comfortable. In teqball, each set is usually decided by a few pivotal points, and the margin between winning and losing at those points is very thin. The final score compresses a process that, when slowed down, reveals many exchanges that nearly turned the other way. The Vietnamese pair keeping their composure at the decisive points is information more important than the number 2-0.

I once told a young colleague: I count every stride to find the person who does not want to run. In teqball, the unit of counting is not the stride but the rhythm of movement around the table. A good pair moves less but more accurately. A poor pair moves more but always arrives late. By comparing the number of movements to the number of touches, one can measure movement efficiency. The Vietnamese pair had high efficiency in this match, meaning they read the ball's trajectory early.

Reading trajectory early is a foundational skill in every net-based combat sport. People see Modric passing the ball; I see him planting his heel like a screw into the grass. The same principle applies in teqball: before the ball arrives, the support foot must already be anchored. If the support foot is not stable, the touch will be off. I checked this on the footage and it was clearly visible at the key exchanges: the Vietnamese players planted the support foot before the ball entered contact range.

The wider context of this competition day deserves attention. The Vietnam Teqball team shortly afterwards missed the chance for another medal when Ba Truong Giang and Le Anh Khoa lost to the Iraqi pair in the men's doubles bronze medal match on the morning of September 20. These two results sit side by side within the same morning. Reading only results, one sees a win and a loss. Reading structure, one sees a problem of squad depth.

In the men's doubles, the Vietnamese pair lost to Iraq. In the mixed doubles, the Vietnamese pair beat India. The difference lies not simply in individual talent but in how the pairs are composed. The mixed doubles event requires coordination between a man and a woman, and in many cases this coordination dynamic creates a compensatory structure. If one player is strong on the right foot and the other on the left, the pair can cover space better. That is why the mixed doubles is sometimes a good opportunity for delegations newly approaching the sport.

I do not want to turn a small detail into a large story. The question to ask is: does the loss in men's doubles change the probability of Vietnam winning medals in the rest of Asiad 20? Based on current data, the answer is yes, but to a limited degree. It reduces the number of potential opportunities in teqball, but does not change the overall structure of the delegation, because teqball is only one part of a broader medal portfolio.

That is why I turn to karate. Athlete Bui Ngoc Nhi continued to help Vietnam claim another bronze medal in the women's individual kata event on the same morning. This is a sport where Vietnam has tradition and a more stable training structure. Comparing teqball and karate on the same competition day is a good way to understand how a delegation allocates expectations between new and established sports.

Let us go into the details of Ngoc Nhi. After losing to host athlete Ono Maho of Japan 0-5 in the opening match, Ngoc Nhi went on to defeat Choi Haeun of South Korea 5-0 and Leong Wai Yee Shannon of Singapore 4-1 to claim the bronze medal. This sequence of results has a very clear structure: heavy loss, heavy win, moderate win. That is a sign of in-day adjustment, not of random form.

In karate kata, the athlete performs a form before a panel of judges. Scores are awarded for technique, rhythm, power, balance and consistency. The 0-5 score against Ono Maho indicates the gap in performance quality in the opening match. The 5-0 against Choi Haeun shows Ngoc Nhi regained structure. The 4-1 against Leong Wai Yee Shannon shows she maintained momentum but did not fully dominate.

What is worth analysing is why a heavy loss early in the day could turn into two consecutive wins. In many performance sports, the first match is often used as a warm-up. The problem is that at continental level, warming up is costly. You do not have many matches to adjust. The ability to adjust within a few dozen minutes is therefore a competition skill in itself, separate from pure performance skill.

I reviewed the score structure of the matches. An athlete may lose because they chose the wrong form for the opponent, because the rhythm was too fast, or because they lost balance at a technical segment. Moving to the next match, they must change at least one parameter. With Ngoc Nhi, based on current data, the parameter changed was rhythm. In the match against Choi Haeun, the performance rhythm was slower and more decisive, helping the technical segments be scored clearly. That is a tactical adjustment, not merely a matter of spirit.

This is the point I want to emphasise. Viewers often attribute changes in form to psychological factors. A data analyst must find the specific variable. In this case, the variable was rhythm. Rhythm in kata is not inspiration. It is a choice that can be trained, measured and adjusted.

Ngoc Nhi's achievement is more notable when placed in the context of her previous marks at SEA Games 33 and Asian youth tournaments. That is a trajectory of continuous development. At Asiad 20, the Vietnamese martial artist still has a chance for another medal when she and her teammates enter the women's team kata quarter-finals against Nepal on September 22.

Women's team kata is a different event in nature from individual kata. In team kata, the judging criteria add the element of synchronisation. Three athletes must perform simultaneously, and judges score both each individual's accuracy and the group's coordination. This is where one excellent individual is not enough to guarantee a result. Three excellent individuals are needed at the same moment.

Nepal in the quarter-finals is, according to regional data, not among the leading karate nations of Asia. That does not mean the match is easy. In team events, the biggest risk comes not from the opponent but from oneself. A single mistimed beat by one member can drag down the whole group's score. Vietnam's probability of advancing in this event, in my assessment based on regional standing, is favourable but not guaranteed.

Now let us widen to the overall picture. After nearly half a day of competition, China rose to the top of the medal table with 2 golds, 4 silvers and 1 bronze. Athlete Lin Xinyu in the women's triathlon brought China its first gold medal at Asiad 20.

Host nation Japan ranked second with 2 golds and 3 bronzes. Macao, South Korea and Kazakhstan each won 1 gold, ranking third to fifth respectively. Meanwhile, Vietnam was temporarily ninth with 2 bronze medals.

The medal table in the early stage of a Games is an indicator of resource distribution rather than of final strength. This must be made clear to avoid misreading. Half a day in, the number of events that have awarded medals is still very small compared to the total. So Vietnam's ninth place at this point carries little predictive meaning.

There is, however, one structural piece of information worth noting. China leads with 2 golds and 4 silvers. The number of silvers exceeding golds shows China has many athletes reaching medal matches but winning only a portion. In the later stage, the ability to convert silvers into golds will determine their final position. For Japan, having 2 golds and 3 bronzes but no silvers is a different distribution. It suggests they have elite athletes winning decisively and others eliminated in the semi-finals.

I have a habit of classifying medals across three layers of verification: data provenance, recalculation, and cross-checking. Three layers of verification are not meant to find the truth, but to calculate how many times the truth survives being distorted. Applied to the Asiad 20 medal table at this moment, I must remind myself that all conclusions are provisional.

What is more worth analysing is the structure of Vietnam's medal portfolio on this day. The two bronzes came from two very different sports: teqball and karate. One sport appearing at the Games for the first time, one with a long tradition. One based on dynamic coordination, one based on technical performance.

This dispersion is a strategic strength, not a weakness. A delegation relying on only one group of sports carries high concentration risk. When the medal portfolio is diversified, the probability of securing at least one medal on a given day rises. This is a basic principle of risk management, and it applies to sport as it does to finance.

Let us go deeper into teqball once more, because it is a new sport and needs careful explanation. Teqball was developed from the idea of harnessing football skills within a controlled competitive frame. Players may not use their hands. The ball is sent over the net with feet, thighs, chest or head. Each side has a maximum of three touches before sending the ball over the net. The ball may not touch the same body part twice in succession.

This rule creates a distinctive tactical structure. Because the same body part cannot be used twice in succession, players are forced to rotate between body parts. This reduces ball control for those who are only good at one technique. It rewards those with diverse technique.

In doubles, the rule is even more complex. Two players must share three touches. In many cases the first player touches with the chest to cushion the ball, and the second touches with the foot to send it over the net. This division requires unspoken communication and understanding of each other's strengths.

The pair of Minh Tan and Gia Nghi, in my observation, operated on a model of clear role division. One player took responsibility for cushioning and stabilising, the other for finishing. This model is effective but has a weakness: if opponents break the cushioning player's role, the whole structure can collapse. Against India, the Vietnamese pair held the structure, but this is a point to monitor in later matches.

I want to address the comparison between teqball and table tennis, as this is how many people approach the sport. Both have a table, a net and a ball. But the core difference lies in the surface. Table tennis uses a flat surface, teqball a curved one. The curve completely changes the bounce structure. It also changes how players must position their bodies.

On a flat surface, players can stand close to the table and react. On a curved surface, players must retreat to have space to handle the trajectory. This distance increases physical demands. A high-level teqball match can expend energy equivalent to a moderate-intensity training session of extended duration.

That is why following teqball requires a different reading framework from table tennis. An analyst must track distance moved, number of direction changes, and recovery time between exchanges. These are things I have experience tracking from athletics. In athletics, I count strides. In teqball, I count approach rhythms.

There is one detail from the bronze medal match I want to record. In one important exchange, the Indian pair sent the ball toward the far corner. The Vietnamese defender did not rush to the landing point but moved along a small arc to approach the ball from behind. This approach allowed him to control the return direction. Rushing straight would only allow a block. Approaching along an arc allows placement. It is a small detail but reflects the level of reading the game.

I do not want to turn this detail into too large a story. The verification question is: does this detail change the probability of the result? In a match decided by a few exchanges, the answer is yes, but I assert it only at the level of likelihood, not certainty. That is my principle: decisive with grounds, but always leaving room for probability.

Now let us move to the contrarian section. There is a common view that new sports like teqball should be seen as easy opportunities for medals, because strong nations have not invested much. I consider this view partly correct but lacking depth.

First, the fact that sports powers have not invested heavily in teqball does not mean competition is weak. On the contrary, it means the competitive structure is not yet stable. In an unstable structure, results fluctuate more. A delegation can win a medal one edition and fail entirely the next if it does not build a system.

Second, winning a medal in a new sport has strategic value but its media value may be contested. Some viewers will question the level of competition. This is a problem the delegation must manage. The best management is systematic investment, so results are not seen as luck.

Third, and this is the most important point, allocating resources between new and traditional sports is a trade-off equation. Resources for high-performance sport are finite. Over-investing in new sports may weaken traditional ones. Ignoring new sports means missing medal opportunities. This is a strategic decision every delegation must make.

Based on current data on Vietnam's sporting structure, I assess that the current allocation ratio leans toward preserving the traditional sport portfolio, with experimentation in new sports conducted at a controlled level. The two bronzes on this day, one from a new sport and one from a traditional one, is a relatively balanced result. I say relatively because one competition day is not enough to conclude on a long-term strategy.

Now let us address decision review time. This is a topic I follow in every sport with officiating elements. In teqball, decisions on whether the ball touched the ground or the same body part twice are difficult. Assistive technology has been introduced, but review time remains an issue.

Review time that is too long is shredding the rhythm of matches. In a sport with a fast rhythm like teqball, a two-minute wait is enough to cool a decisive exchange. This is my view and it is not a judgement against technology. Technology is necessary to ensure fairness. The problem is process, not the existence of technology.

In karate kata, this issue is smaller because results are scored by a panel of judges based on clear criteria. However, subjectivity in scoring remains a factor. That is why performance sports are often seen as carrying higher risk for athletes. A small error can be scored differently by different judges.

I want to spend a section on reading the meaning of a bronze medal. In the medal system, bronze is often seen as a third-place result. But in strategic analysis, bronze has its own value. It shows the athlete has passed qualifiers and at least one important match. In many sports, reaching the bronze medal match is itself an achievement.

With teqball, this bronze carries added meaning because it is the first time the sport has been included in the Games. It establishes an initial benchmark. In later editions, this benchmark will be the comparison point. If Vietnam cannot maintain the result, pressure will rise. If it can, this sport can become a stable part of the medal portfolio.

With karate, Ngoc Nhi's bronze has a different meaning. It reinforces an established trajectory. Ngoc Nhi already had marks at SEA Games 33 and Asian youth tournaments. Adding a medal at Asiad 20 is the next step in that trajectory. For a young athlete, the continuity of the trajectory matters more than the value of a single medal.

There is one aspect I want to verify before concluding. Ngoc Nhi losing to Ono Maho 0-5 in the opening match can be read as a gap in level. But it must be weighed: Ono Maho is a host athlete, competing at home, with the entire crowd behind her. Home advantage in performance sports can affect scores, though the degree is hard to measure precisely. So I do not conclude that the level gap is 5-0. I note only that under the conditions of that match, Ono Maho scored higher.

Similarly, the 5-0 score against Choi Haeun of South Korea should not be read as Ngoc Nhi being absolutely superior. It should be read as, in that match, Ngoc Nhi performed better on every scoring criterion. This is the difference between reading results and reading structure.

I want to restate a principle of mine: data never shouts, but it will repeat until you listen. On this competition day, the data repeated twice: once at the teqball table, once on the karate floor. Both times it pointed to the same thing: the ability to adjust during competition is the decisive factor.

In teqball, adjustment happened between sets. In karate, between matches. In both, athletes had to read the problem and fix it in a short time. This is a skill I consider more important than many others in high-performance sport, and it is often overlooked in analysis.

Let us talk about the wider context of Asiad 20. This is a Games where many new sports were added, reflecting the trend of refreshing the competition programme of continental sporting events. Teqball's first appearance is part of this trend. New sports are usually added to attract younger audiences and increase diversity.

For delegations, having new sports is both an opportunity and an organisational challenge. There must be a system for selection, training and support specific to the new sport. The structure of established sports cannot be applied mechanically. With teqball, Vietnam having two athletes capable of competing for medals in the first edition is a positive sign of the system's adaptability.

I want to raise the question of sustainability. In new sports, early success often relies on a few outstanding individuals. The question is how to move from individual success to systemic success. This is the question I consider most important for the future of Vietnamese teqball.

Based on current data, it is not enough to conclude on sustainability. At least two to three Games editions must be tracked for comparative data. I will not draw an early conclusion. That is my principle of probabilistic caution.

Now let us return to Ngoc Nhi's story and the rest of the karate events. She and her teammates entering the women's team kata quarter-finals against Nepal on September 22 is the next opportunity. I will follow this event with particular attention, because women's team kata is an event where Vietnam may have a structural advantage if it has three sufficiently even athletes.

In my analysis, squad evenness is the key factor in team events. A team with one outstanding athlete and two average ones will be limited by the two average ones. A team with three good athletes but no standout may achieve a higher synchronisation score. This is the paradox of team sports, and it applies to team kata.

I want to extend the analysis to another aspect: how delegations manage public expectations. After this competition day, Vietnam has two bronzes and is temporarily ninth. This is a result the public may read in several ways. One reading is positive: medals on the first day. Another is cautious: no golds yet and the ranking is not high.

An analyst has a responsibility to provide context to avoid both extremes. The medal table in the early stage does not yet reflect final strength. What matters is following the trend across days, not reading a single point in time.

In my experience following matches and Games, I have seen the medal table reverse completely in later stages many times. So I always remind readers that temporary rankings are data, not conclusions. This is something I consider important for maintaining objectivity.

Now let us go into a more detailed analysis of the structure of a competition day at the Games. An Asiad competition day usually starts early in the morning and extends into the evening. Events are scheduled to avoid too much overlap. This means a delegation must allocate personnel and support resources across multiple venues at once.

On this day, two bronzes came from two different venues, in two different sports. Organisationally, that is a challenge. Coaches, medical staff and logistics support are needed at both venues. That both succeeded is a sign of the delegation's organisational capacity.

I want to emphasise this aspect because it is often overlooked. Fans see athletes on the field. They do not see the support structure behind them. But the support structure is the decisive factor in the long run. A tank tread never stands out in a photo, but it determines which swamp the vehicle can cross.

I want to spend this section on how to analyse a medal across three verification layers. The first layer is data provenance: where the result comes from, whether it is confirmed by the organisers, whether it matches multiple independent sources. The second layer is recalculation: whether the numbers are consistent, whether there are rounding discrepancies, whether units are appropriate. The third layer is cross-checking: whether the result matches historical data and context.

With the two bronzes on this day, all three layers produced consistent results. The teqball result was confirmed by the Games organisers. The karate result was confirmed through specific matches. There were no numerical discrepancies. So I can analyse with high confidence.

There is one point to note about teqball data. Because the sport is new, the historical database is thin. This limits cross-checking. I had to rely more on direct observation and technical analysis. That is why I rewound the footage three times before making a judgement.

I want to add a note on the emotional aspect of athletes, but in a way that does not dramatise. In high-performance sport, psychological pressure is a measurable variable through indicators such as success rate at decisive points. With Ngoc Nhi, losing heavily in the opening match then winning two in a row shows good psychological recovery. This is an important indicator.

I do not write about broken hearts or similar emotional narratives. I write about success rates at decisive points. That is how I approach sport, and that is how I believe useful information is delivered to readers.

Let us talk about how to read a specific teqball match. In the bronze medal match of Minh Tan and Gia Nghi, there were three clear phases. The first was probing, when both sides held the ball securely and took few risks. The middle phase was acceleration, when one side tried to create distance. The final phase was closing, when the leading side tried to preserve and the trailing side tried to close the gap.

The Vietnamese pair, in my observation, controlled the middle phase better. They accelerated at the right moment and created distance before entering the closing phase. This is an important tactical skill. Leaving acceleration until the closing phase carries much higher risk.

This connects to a principle in athletics I learned over many years: effort distribution is the decisive factor in distance races. If you accelerate too early, you exhaust yourself. If you accelerate too late, you run out of time. Finding the right moment to accelerate is the skill of a champion.

This principle applies to teqball even though it is a different sport. The Vietnamese pair found the right moment to accelerate. That is why they won 2-0 instead of letting the match drag on.

I want to discuss the Indian pair, Dsouza Quimcy Joaquim and Beg Mohamed Anas Imran. They lost but were not weak opponents. In the early phase they controlled well and created some difficult exchanges. Their weakness, in observation, was the ability to adjust when trailing. This is a common weakness in new pairs.

Analysing opponents is an important part of sports analysis. A victory cannot be assessed without understanding the opponent. A win over a strong opponent has different value from a win over a weak one. With teqball, because the database is thin, assessing opponents is limited. I note this as a limitation of the current analysis.

Now let us widen to the regional context. Teqball in Asia is developing at different speeds across countries. Southeast Asian nations have an advantage in football culture, which can translate into an advantage in teqball. West Asian nations also have diverse sporting foundations. Competition in this sport is expected to increase in coming editions.

For Vietnam, having a medal in the first edition is a positional advantage. It establishes a place on the map of this sport. Other countries will have to account for Vietnam when preparing. This is strategic value beyond the medal itself.

I want to discuss the media aspect of a new sport. Reporting on teqball requires the writer to explain the rules, the context and the meaning. This is an opportunity to raise public understanding of less popular sports. A sports journalist has a responsibility to provide accurate and contextualised information.

I have a habit of double-checking every number before publishing. With this article, I checked the medal figures, the match results and the context. Thorough checking is not excessive. It is a professional principle.

Now I want to spend the final section consolidating the insights. This is not a summary but a set of analytical points to remember.

Point one: the ability to adjust during competition is the decisive factor in both teqball and karate. This is a common skill of high-performance sport, and it can be trained.

Point two: diversifying the medal portfolio between new and traditional sports is a sound risk-management strategy. Two bronzes from two different sports on the same day is evidence of the value of this strategy.

Point three: the medal table in the early stage is an indicator of resource distribution, not of final strength. Trends must be followed across days.

Point four: the sustainability of success in a new sport depends on the ability to move from individual success to systemic success. This is a long-term challenge.

Point five: excessively long decision review time is a problem in many sports, and it affects match rhythm. This is an issue to be resolved at the management level.

I want to close with a progressive thought. Every medal in a new sport is a seed. A seed only has value if planted in good soil. Good soil here means the training system, the facilities, and regular competition opportunities. If there is only a medal without a system, the seed will not sprout.

The question I leave for readers: when a new sport brings home a medal, do we celebrate the result, or do we build the road? The answer will determine whether today's feat becomes tomorrow's standard.

In the coming days of Asiad 20, I will continue to follow both teqball and karate. With teqball, the remaining events will provide more data on squad depth. With karate, the women's team kata quarter-final against Nepal on September 22 is the next opportunity. For Vietnam's delegation, this is the phase where managing expectations and allocating resources becomes most important.

I will open the spreadsheet before each competition day. That is how I work, and that is how I believe valuable information is delivered to readers. Numbers may not shout, but they will tell the story if we listen.