Three Identical Matches for Vietnam U23: The Defensive Hole and the Missing Holding Midfielder

In the first half of the Vietnam U23 versus Uzbekistan U23 match at the 2026 Asian Games, I sat in front of a monitor with a notebook and three columns. The first column recorded balls played into the left channel. The second recorded balls returning the other way. The third recorded the number of times the back three was stretched so wide that two center-backs no longer covered each other.

After twenty minutes, the third column had four marks. After forty-five minutes, it had eleven.

I keep notes this way not because I enjoy dry numbers. I do it because across fourteen years of watching football in many different competitions, I have learned one thing: what a team repeats across three consecutive matches matters more than what it does in a single flash of brilliance. Emptiness has its own pulse, and I wrote it down.

Former international Nguyen Tuan Phong, in his post-match analysis for Tuoi Tre, said the line I consider the most accurate of the entire exchange: Vietnam U23 played three identical matches. He was not talking about scorelines. He was talking about structure. When a pattern repeats three times in three matches, it is no longer a matter of luck.

Vietnam U23 secured a quarterfinal berth at the 2026 Asian Games. That is a positive result, and nobody has the right to deny it. But the way they got there, with two goals described as conceded too easily, with a string of chances squandered, and with a makeshift defense, raises questions a ticket cannot answer on their behalf.

I was not looking for a flash of brilliance in this match. I was following the steady pulse of everything: the rhythm of the two wing-backs pushing high, the slower rhythm of the back three retreating, the rhythm of safe passing in midfield, and the rhythm of silence in front of the opponent's goal.

The context of this match needs to be placed correctly. The 2026 Asian Games is a stage Vietnamese youth football entered with a pre-defined ticket: clearing the group stage was the minimum objective, going deep was the aspirational one. Vietnam U23 sat in Group C alongside Uzbekistan, Kuwait, and the Philippines. Uzbekistan is a side domestic experts assess at a different level, a youth football nation with a stable development system built over many years. Kuwait and the Philippines are opponents Vietnam must overcome if it wants to control its own fate.

The final group outcome sent Vietnam U23 into the quarterfinals alongside Uzbekistan. That ticket came from a combination of the team's own points and results elsewhere. In football, there is nothing shameful about that. The group-stage format always allows teams that play well enough to advance, and Vietnam played well enough to be there.

But there is one foundational fact I want the reader to keep in mind throughout this piece: all tactical claims in the original analysis come from a single source, former international Nguyen Tuan Phong. He is a credible expert, a former national-team player with a high-level observation background. But it remains expert opinion, not independent measurement. No expected-goals figure, no shot count, no pressing metric, no specific possession figure was published in the source.

Data does not lie, but it is very good at staying silent. In this case, the data is entirely silent, and that forces me to write in the language of observation and inference rather than the language of measurement.

To understand why Tuan Phong's comments deserve attention, they need to be placed beside the recent history of Vietnamese youth football. At the 2026 AFC U23 Asian Cup, Vietnam U23 beat South Korea U23 on penalties in the third-place match. That milestone set a high standard for this very football nation. One generation of players proved they could stand level with top continental football nations in a specific match.

And that standard itself creates comparative pressure. When Tuan Phong says the current Vietnam U23 squad is weaker than itself in the past, he is placing the yardstick exactly where the coaching staff and federation would prefer it not to be placed. But it is a question that needs to be asked, because youth football always operates on generational cycles.

One generation grows up, graduates from the U23 level, and leaves gaps. The pillar center-backs leave. The midfield conductors leave. A new squad is built around new people, with different strengths and weaknesses. The analyst's question is not whether the new generation is as good as the old one, but what problem the new generation is being built to solve, and whether that problem matches the current squad structure.

In the case of Vietnam U23 at the 2026 Asian Games, the answer is emerging fairly clearly, and it is not in the attack.

The back-three system Vietnam U23 uses is a common tactical choice in modern football. It allows a team to control the ball in the first line, create numerical superiority in midfield, and use two attacking wing-backs as wide attacking outlets. In theory, this shape suits a team that wants to play with control and initiative.

But every system has its structural weakness, and the weakness of the back three lies in the space behind the two wing-backs when they push high. If both wing-backs push forward simultaneously, the back three must spread to cover the width of the pitch, and the two wide center-backs must cover wider areas than normal. Without a holding midfielder screening in front, those two center-backs will be placed in continuous one-on-one situations when the opponent counterattacks.

That is exactly what Tuan Phong describes. He says the center-backs did not cover each other. He says the left channel of Le Dinh Long Vu was heavily exploited in the first half. He says bringing Phi Hoang on improved the situation.

Those three observations, placed side by side, tell a complete story about a structural hole that an opponent identified and exploited.

Vietnam U23's defensive hole is not the personal fault of any individual; it is the inevitable consequence of a structure with no genuine holding midfielder screening in front.

When a wing-back pushes high, the space behind him is only protected if someone fills in. In a properly functioning back three, the filler is usually the wide center-back on the same side, or the holding midfielder dropping to form a temporary back four. At Vietnam U23, both mechanisms are missing.

The center-backs not covering each other, as Tuan Phong describes, means the first mechanism is not working. And the absence of a genuine holding midfielder, what Tuan Phong calls a Thai Son type, means the second mechanism does not exist either.

What is notable is that Tuan Phong is not merely talking about the absence of a specific player. He is talking about a team that seemingly cannot find a suitable holding midfielder anywhere in its current pool. That is a far heavier statement. It is not about injury or form. It is about squad structure and development philosophy.

In the Vietnam U23 squad at this tournament, the two central midfielders mentioned are Xuan Bac and Nguyen Thai Quoc Cuong. Both are attack-oriented players. That is not their fault. It is a personnel choice reflecting available resources. But when both central midfielders lean forward in support of the attack, the midfield becomes a large void when the team loses the ball.

That void has a direct consequence: the back three faces counterattacks without a first layer of cushioning. Every through-ball from the opponent becomes a real chance, because there is nobody there to cut it out.

Vietnam's left flank in the first half against Uzbekistan was where this hole showed most clearly. Le Dinh Long Vu is a young attacking wing-back. When he pushed high to join attacking moves, the area behind him became a target. Uzbekistan, described as a class side with organization, recognized this and exploited it systematically.

Bringing Phi Hoang on in the second half improved the situation. This is a positive signal about the coaching staff's ability to read the game. But it is also a signal of reactivity rather than proactivity. The problem was solved after it had caused damage, not before it occurred.

In knockout football, in-game adjustment ability is a genuine asset. The Vietnam U23 coaching staff has it. But adjustment ability is only valuable if the team survives long enough to adjust. If the hole is exploited earlier, if the opponent scores in the tenth minute rather than the sixtieth, the window for adjustment disappears.

That is why the defensive problem must be solved at the structural level, not the reactive one.

One other factor belongs in the picture: the absence of two center-backs regarded as first choice, Hieu Minh and Nhat Minh. Neither was available against Uzbekistan, forcing the coaching staff to field a makeshift defense with names like Duc Anh, Le Nguyen Hoang, and Pham Ly Duc.

This is an important fact when apportioning responsibility. A back three of players who have not played together much cannot have the necessary understanding. That lack of understanding is described by Tuan Phong as a lack of smooth coordination. In a system that demands constant synchronized shifting, a lack of coordination is a hole that can be exploited minute by minute.

But this is also the moment to distinguish cause from condition. The absence of two center-backs is the condition that weakened the defense. But the deeper cause is a squad without enough depth to replace them. In a well-developed youth football nation, losing two center-backs causes difficulty but should not collapse the entire defensive system.

At Vietnam U23, it very nearly did.

Now comes the hardest part of the story: finishing efficiency.

Tuan Phong describes Vietnam U23 as controlling the ball well but missing many chances. He says three matches were identical. The pattern repeated enough to become a characteristic, not an accident.

In football data analysis, there is a principle I always hold: chance volume and chance quality are two different things. A team can create twenty chances and not score, while another creates three and scores two. The difference lies in chance quality, not quantity.

When a team misses many chances across three consecutive matches, there are two explanations. The first is that it is creating many high-quality chances but its attackers are not sharp enough to convert. The second is that it is creating many low-quality chances, hopeful efforts from outside the box or from narrow angles, and failing to score is the natural consequence of not creating genuinely dangerous chances.

Without expected-goals data, I cannot say for certain which explanation is correct. But I can say the second is often overlooked in public discussion, because it is less appealing. Saying our strikers cannot score sounds concrete and easy to grasp. Saying we do not create enough high-quality chances sounds abstract and hard to accept.

Vietnam U23's finishing problem may not lie in the strikers' boots, but in the positions from which chances are created.

There is another fact to place beside this issue: the absence of Dinh Bac. Tuan Phong mentions the lack of a class player in attack, someone who can make a difference in moments of deadlock. Dinh Bac belongs to the archetype of a player capable of solving situations on his own.

A team with such a player operates differently. He creates space for teammates by drawing the attention of the opposing defense. He converts seemingly harmless balls into real chances. He is the problem-solver when the system cannot produce a solution.

When such a player is absent, the system does not collapse immediately. But it loses the ability to produce goals out of nothing. And in matches where the system controls well but cannot penetrate, goals out of nothing are precisely what decide results.

This is the moment to address an aspect few commentators discuss: the pressure this structure places on the attackers themselves. When a team controls the ball well but does not create high-quality chances, strikers are often pushed into shooting from unfavorable positions. They receive the ball tightly marked, without teammates in good supporting positions, and are forced to try their luck.

A shot from outside the box under tight marking has a very low conversion probability. When players take many such shots across three consecutive matches, the conversion rate will be low. That does not mean they cannot finish. It means they are being placed in positions to fail.

Tuan Phong makes another notable observation: Vietnam U23's good ball control. In modern football, possession is a highly valued metric. But possession only has value when it leads to chances. When a team controls the ball without penetrating, it is in the state I call harmless possession.

Harmless possession has a dangerous feature: it creates a false sense of safety. The team feels it is controlling the match. The fans feel the team is playing well. But when the opponent counterattacks, the team is in its most advanced and most vulnerable posture.

That is why a state of possession without penetration is often accompanied by counterattack goals. The two problems are not separate. They are two sides of the same coin.

In Vietnam U23's case, this structure creates a paradox: the team controls the ball to attack, but that very control creates space for the opponent to counter. Every unsuccessful attacking move is a potential opportunity for the opponent. And when the system has no defensive cushion in midfield, those potential opportunities become real ones.

Now I want to address what I consider the biggest blind spot in how Vietnam U23 is being assessed at this tournament.

When a team reaches the quarterfinals, the natural reaction is celebration. That is an entirely reasonable reaction. But it usually comes with an implicit assumption: that the team did everything necessary to advance. At Vietnam U23, that assumption needs reconsideration.

This team reached the quarterfinals while conceding two goals described as too easy, while missing many chances across three consecutive matches, and while operating a makeshift defensive system. The points carried them through. But points do not reflect the quality of the process.

In sports analysis, two types of results must be distinguished: results that exceed the process and results that reflect the process. A team whose results exceed its process is living on luck and will run dry when luck does. A team whose results reflect its process is living on merit and can sustain it.

Without metric data, I cannot say for certain which type Vietnam U23 is. But what Tuan Phong describes, a repeating pattern of possession, missed chances, and soft concessions, suggests this team may sit in the first group.

This is the moment to address expectation. Tuan Phong, as a credible expert, speaks of many squad deficiencies and of needing to hope for a surprise. That is a way of lowering expectations. In football, lowering expectations is a rational strategy, especially ahead of a knockout round where the opponent may be a tier above.

But lowering expectations also has a consequence: it releases the coaching staff from pressure while simultaneously setting a ceiling on what the team can achieve. When an expert says the current squad is weaker than itself in the past, he is not merely describing reality. He is setting the standard for what should count as success.

One point deserves a clear head here. Comparing the current squad with the Kim Sang Sik era squad is a comparison with a basis, but it also has limits. Youth football operates on generational cycles. Each generation has a different set of players, with different strengths and weaknesses. A generation having fewer defensive talents than the previous one does not necessarily reflect a decline of the whole football nation. It may reflect a temporary gap in the development cycle.

What is concerning is not a weaker generation, but a persistent positional gap at two pivotal positions: center-back and holding midfielder.

When a football nation produces more creative attackers than solid defensive players, that is a sign about development philosophy. It can stem from many causes: how youth coaching is done, how players are selected, how V.League clubs prioritize developing attackers because they carry higher transfer value.

This is an issue with long-term consequences. A football nation can produce outstanding strikers and still fail at national-team level without a solid defense and midfield. Football is a sport of balance, and a talent imbalance between lines is one of the most common causes of failure at major tournaments.

At Vietnam U23 at the 2026 Asian Games, this imbalance shows clearly: a team capable of controlling the ball, with attacking players of potential, but lacking the defensive pillars to protect the result.

We need to return to the pivotal issue: the coaching staff's in-game adjustment ability. Bringing Phi Hoang on in the second half improved the left flank. That is a genuinely positive signal. It shows the coaching staff can read the game and make appropriate decisions in real time.

In knockout football, this ability has special value. Knockout matches are often decided by small adjustments: a personnel change, a positional tweak, a switch from control to counter. A coaching staff capable of making those adjustments is one capable of making a difference.

But adjustment ability only has value if it is applied before damage occurs. This is the distinction between reaction and proactivity. A reactive coaching staff solves a problem after it appears. A proactive one anticipates it before it appears.

Against Uzbekistan, the left-flank problem appeared in the first half and was solved in the second. That is reaction, not proactivity. In a knockout match, the gap between when a problem appears and when it is solved can be the gap in which the match is decided.

This is the biggest risk for Vietnam U23 in the quarterfinals: not a lack of talent, but a lack of ability to anticipate and prevent problems before they become goals.

I want to address an aspect I consider important but under-discussed: the role of potential quarterfinal opponents.

Tuan Phong mentions the possibility of Vietnam U23 meeting South Korea or Saudi Arabia. Both belong to the elite group of Asian youth football. He also mentions the team needs improvement to hope for a good result against opponents with strong midfields and good physicality.

This is an important tactical warning. Vietnam U23 is playing a control-based game. That style can succeed against opponents weaker technically or lacking organization, but it can struggle against opponents with good physicality and strong midfields. The reason is specific: a team with a strong midfield can impose pressing on Vietnam's midfield, break its ball control, and force Vietnam to play in ways it is not used to.

In that situation, the defensive holes already visible against Uzbekistan become more serious. If Uzbekistan can exploit Vietnam's left flank, a higher-tier side can exploit it more effectively. If Uzbekistan can score two goals described as easy, a better attacking side can score more.

This is not pessimism. This is risk assessment. In knockout football, risk assessment is a necessary condition for preparation.

There is one positive signal in the historical data: Vietnam U23 beat South Korea U23 on penalties in the 2026 AFC U23 Asian Cup third-place match. That proves Vietnamese youth football can stand level with an elite opponent in a specific match. In knockout football, a specific match is all you need.

But it is also worth remembering that achievement belongs to a different squad. Not all the players who created it are present in the 2026 Asian Games squad. This is a new squad, with new players, and a different preparation schedule. The memory of beating South Korea is a psychological asset, but it is not a technical guarantee.

There is a question I want to pose and leave open: is Vietnam U23 being built to maximize its strengths, or to hide its weaknesses?

This question distinguishes two tactical philosophies. Some teams are built around their strengths: they have outstanding attackers, they design a system that maximizes those players, and they accept defensive risk as the price. Other teams are built to hide their weaknesses: they have defensive holes, they design a system that protects those holes, and they accept limited attacking output as the price.

At Vietnam U23, there are signs of both. The back three with two advanced wing-backs is an attacking system. It aims to maximize ball control and chance creation. But using a makeshift defense and lacking a holding midfielder shows this system was not designed to protect defensive weaknesses. It was designed to maximize attacking strengths, but it lacks the resources to do so safely.

The result is a system in a half-state: it attacks, but not sharply enough. It defends, but not solidly enough. This is the state I call an unlocated identity.

A team with an unlocated identity often shares one feature: it plays well in short spells but cannot sustain performance across a match. It has beautiful moves, but no corresponding results. It creates the feeling that it is playing well, but not the feeling that it will win.

What Tuan Phong describes, three identical matches with good possession, missed chances, and soft concessions, fits the profile of a team with an unlocated identity.

Now I want to address what I consider the biggest blind spot in public assessment: the assumption that squad quality is the only factor determining results.

In football, squad quality matters. But tactical structure matters just as much, and sometimes more. A team with average squad quality but an appropriate tactical structure can beat a team with higher squad quality but an inappropriate structure.

At Vietnam U23, a question needs to be asked: are the described problems consequences of squad quality, or consequences of a tactical structure unsuited to the available squad?

I lean toward the second. A back three with two advanced wing-backs requires a genuine holding midfielder, center-backs capable of covering each other, and attackers capable of converting chances. Vietnam U23 at the 2026 Asian Games lacks all three at once. In that situation, continuing to operate this system is a tactical choice worth reconsidering.

A more suitable system might be a tighter defensive setup, accepting yielding possession and exploiting counters. That is the approach many teams weaker in resources use against stronger opponents. It is not beautiful, but it is effective.

But switching systems mid-tournament is a hard decision. It requires training time, player adaptation, and risk acceptance. At this stage, with the team already in the quarterfinals, changing the system is a gamble.

This is why Vietnam U23's problem is harder to solve than it appears. It is not a lack of talent, but a lack of fit between system and resources, and that lack of fit cannot be fixed by a simple personnel change.

I want to close with an observation about what to watch in the quarterfinal.

The most important signal will be the return of the pillar center-backs. If Hieu Minh and Nhat Minh can play, defensive risk drops significantly. A back three of center-backs who have played together much will have an understanding a makeshift one cannot. This is the factor with the largest influence on the match's shape.

The second signal will be midfield personnel. If the coaching staff deploys a genuine holding midfielder, even one player sitting lower than his teammates, the defense will be better protected. This is a tactical adjustment that can be made without changing the whole system.

The third signal will be how the team handles attacking moves. If it continues shooting from unfavorable positions, the finishing problem will persist. If it seeks to create higher-quality chances, through organized combinations or set pieces, conversion can improve.

The fourth signal will be the identity of the opponent. A favorable draw can open a path. An unfavorable one can place the team in a hard position. In knockout football, the draw is an uncontrollable factor, but a high-influence one.

And the fifth signal, perhaps the most subtle, will be how the team reacts when it falls behind. This is the true test of a team. A team can play well when level or ahead, but its real nature only shows when it is behind and forced to chase. In that situation, structural holes show most clearly, and the coaching staff's adjustment ability is tested most severely.

The audience does not define a match; it only makes it clearer.

Vietnam U23 achieved what many expected: a quarterfinal berth at the 2026 Asian Games. But the road ahead is not decided by the ticket already won. It is decided by the ability to solve the problems that surfaced across three identical matches.

Those three matches were not three accidents. They were three repetitions of the same pattern. And in football, a pattern repeated three times is a signal, not a coincidence.

The question is not whether Vietnam U23 has enough talent to go far. The question is whether it can change its own structure before the tournament ends. In fourteen years of watching football, I have seen many teams go far by changing structure, and many stop because they kept it. The difference between those two groups is usually not talent. It is the ability to recognize that a repeating problem is not a matter of luck.

Process exists to be challenged, but the beat keeper never gives up.