Vietnam U23 reach the 2026 Asian Games quarterfinals: three identical matches and the cost of a makeshift defence

In the 34th minute, the ball was floated into Vietnam U23's left channel again. The fifth time in the first half. I was sitting in front of a screen in Manchester, the usual cafe had shut at eleven, and I wrote three words in my notebook: same mistake. Outside, English rain was falling in that way it never quite stops; inside, Vietnam U23 were playing the kind of football I have watched over and over across Asian youth tournaments for years: tidy on the ball, accurate in short passing, controlling the tempo, and then conceding in a manner so simple it is almost irritating.

The final score against Uzbekistan was 0-2. The ticket to the 2026 Asian Games quarterfinals still went to coach Dinh Hong Vinh's side, thanks to the result in the other Group C fixture. But what I took home that night was not joy; it was a technical question. How does a team that controls the ball well lose by the same script three matches in a row? Former international Nguyen Tuan Phong called it three identical matches. I dislike rounded phrasing, but I have to admit: he touched the sorest spot.

On that empty Etihad night, I suddenly heard my own applause most clearly. I wrote that in 2026, when football froze. It still holds for nights like this, watching alone: with no stands to hide behind, only the structure of the match is exposed.

A few facts need restating before we dissect anything. The 2026 Asian Games men's football tournament is staged for U23 squads with a limited number of over-age slots. Vietnam U23 were drawn in Group C with Uzbekistan, Kuwait and the Philippines. Vietnam lost 0-2 to Uzbekistan in the final group fixture but still reached the quarterfinals; the parallel result played no small part. That must be said plainly: the ticket partly came from the shape of the group, not purely from form.

On the other side, Uzbekistan are described domestically as a class youth side. That phrasing has a purpose: it turns defeat into losing to a better team, rather than losing yourself. I do not object to respecting opponents, but I object to using it as a blanket over holes.

Personnel is the more interesting part. Two centre-backs regarded as first choice, Hieu Minh and Nhat Minh, were absent. Dinh Hong Vinh had to build a makeshift back three with Pham Ly Duc plus two newcomers, Duc Anh and Le Nguyen Hoang. Their mutual understanding had never been tested at this level. In a decisive match, imperfect coordination between three centre-backs is an inevitable consequence, not a surprise.

At the same time, the team lacked a genuine defensive midfielder. Tuan Phong said Vietnam have no player of the Thai Son type, and seemingly cannot find one. The midfield was run by Xuan Bac and Nguyen Thai Quoc Cuong, both attack-leaning. Up front, Dinh Bac was missing, meaning the attacking reference point capable of solving situations alone was also gone. Three missing pieces sat exactly on three spine positions: centre-back, holding midfielder, centre-forward.

For a benchmark, remember a recent high point: at the 2026 AFC U23 Asian Cup, Vietnam beat South Korea on penalties in the third-place match. That proves the team can beat a continental heavyweight on a good day. It is also precisely the marker that makes this U23 side measured by a harsher ruler, and assessed domestically as weaker than its own previous cycle.

The back three and the space behind the wing-back

A back three with high wing-backs is a common modern structure, nothing exotic. The issue lies elsewhere: it is only safe with three accompanying conditions. First, the three centre-backs cover each other in the right rhythm. Second, a defensive midfielder screens in front. Third, the two wing-backs advance staggered, not simultaneously. Vietnam lacked all three that night.

Tuan Phong reported that the centre-backs did not cover each other. That is the symptom of a back line that has not played together long enough. Centre-backs in a three must move as one block: when the ball goes left, the left centre-back steps out, the middle one shifts across, the right one drops as cover. The makeshift trio could not do that, and Uzbekistan exploited exactly the space behind left wing-back Le Dinh Long Vu.

The core point is this: the problem is not that the left flank is weak, but that the structure makes the left flank the most vulnerable zone, and nobody covers it. When a wing-back advances, the space behind him is a quarter of the pitch wide. If the holding midfielder does not fill it, the outer centre-back must step out, immediately exposing the space behind the middle centre-back. That is the classic domino effect of a back three played out of rhythm.

In the second half, Phi Hoang came on and the situation improved. That is a genuinely positive signal: the coaching staff read the problem and fixed it in-game. But its nature must be stated clearly. It was reactive repair, not pre-emptive prevention. The team only fixed things once they had been exploited, not before. In knockout football, the gap between those two things is usually the gap between advancing and going home.

In athletics, the difference between a 200m runner and a 400m runner is not top speed but how they distribute rhythm. Teams are the same. Needing a full half to realise you are being exploited is a rhythm-distribution problem, not a capability problem.

No anchor: a structural fault, not an individual one

This is the section I want to give most time to, because it is the most misunderstood.

A team playing a back three without a proper defensive midfielder always defends short of cover. The pair of Xuan Bac and Nguyen Thai Quoc Cuong both lean attacking: they are good on the ball, good at passing, but their first instinct on losing possession is not to plug the central corridor. The consequence is that the two wide centre-backs are dragged out of position far too often, and the goals arrive in the manner described as too easy.

This is the single most important technical point of the match: the two goals were not the product of isolated individual errors, but of a midfield with no dedicated defensive player. Without an anchor, every mistake higher up converts directly into an opponent chance. Losing the ball in midfield means the back three face a transition with nobody breaking the first beat.

From a coaching perspective, this is a resource problem rather than a purely tactical one. You cannot ask an attacking player to play like an anchor merely by redrawing a diagram. That role requires scanning, positioning and decision-making honed over years. When domestic experts say there is no Thai Son and none can be found, they are describing a development gap, not a wrong selection.

Three identical matches: chance quality, not volume

Tuan Phong said Vietnam wasted many chances, and the pattern repeated across all three group matches. With the publicly available data, I cannot verify this through expected goals, shot counts or pressing metrics. The fact that the pattern repeated three times is itself valuable data: it rules out the bad-luck hypothesis.

Repeating identically across three matches says one thing: this is a predictable weakness, not random variance. And a predictable weakness is one opponents can read too.

Here I want to break from the conventional reading. The phrase wasted chances is usually understood as a striker problem. I regard it as a chance-creation structure problem. When a team dominates possession but has no attacking reference point capable of drawing defenders, the chances produced tend to be shots from outside the box, at narrow angles, against a set defence. Statistically, that is a low-quality chance profile. Shooting often without hitting the target is not a lack of nerve; it is the consequence of creating the wrong kind of chance.

In other words, the problem is not the finisher but the posture in which the ball reaches him. Without Dinh Bac, the team lost the player who can manufacture a high-quality chance out of nothing. Compensating with chance volume is the least efficient form of compensation in football.

Football is, by nature, a drama of mistakes; I merely help make it worth watching. I wrote that for myself, after years of commentary. It applies to teams too: what is worth watching is not the miss itself, but whether the team can repair the structure that produced it.

The last twenty minutes and the five-substitution rule

One variable rarely mentioned in post-match commentary: the five-substitution allowance. In theory it lets a deep squad rotate and sustain intensity. In practice it turns the final twenty minutes into a war of attrition, where the side with more quality on the bench prevails.

For a squad thin through the defensive spine and lacking an anchor, the rule is not a favour. You can bring on three attackers, but with nobody holding the defensive rhythm, reinforcing the attack only exposes the defence further. That is the paradox of modern football: more substitutions do not automatically produce more safety.

The one bright spot and its limits

To be fair, there was one real bright spot. Bringing on Phi Hoang and improving the left flank showed the coaching staff can read a match. In knockout football, the ability to correct in-game is a genuine asset, because every plan breaks at some point.

The limit is this: fixing one flank does not mean fixing the system. If the quarterfinal follows a similar script, the team will again need a half to recognise the problem and another to fix it. Against strong opponents, that window is too long. I like the coaching staff's flexibility; I just do not want it to be the only option.

Now the part I believe is most misread in the post-match discourse.

The popular reading: losing 0-2 is a sign of decline. I hold the opposite view, and have held it for a long time. A 0-2 defeat that exposes structure is worth far more than a 1-0 win from an 89th-minute set piece. That kind of win gives you three points and hides three problems. This kind of defeat gives you one lesson and hides nothing.

I once wrote about Sunderland when they were relegated, and took heavy criticism for the line that going down is a way of going up. The principle behind it applies here: failure only has value if it forces you to name the problem. Sunderland went down, and I still hold the view: going down is a way of going up, but only if you are willing to read the balance sheet rather than blame the referee.

The second counter-intuitive point: public pressure is converging on the attack, while the real problem lies in defence and in the resources behind it. A team with a makeshift back line and no anchor will struggle to win knockout matches no matter how well the attack plays. The priority order has been inverted: people worry about scoring, while failing to keep the ball out is what kills teams.

The third counter-intuitive point, and the one that most troubles me as I write: Vietnam's youth development pattern seems to produce better attackers than defensive spine players. Dinh Bac is a class attacking talent; regional and European markets will watch names like that. But the list of centre-backs and defensive midfielders good enough at this level is thin, and thin at the most important moment. A football nation that develops creative players better than destructive ones will always lack someone to run the lower lines. This is a long-term issue, not the issue of one match.

Finally, something rarely said: the fact that domestic media publish criticism this direct is a healthy signal. It shows Vietnamese football has room for open self-interrogation rather than only two registers: adulation and abuse. I would rather read a critique that names names than praise that names nothing.

On substitutions and the closing minutes, I stand by what I have written for years: the rule helps deep squads, but it also turns the final twenty minutes into a war of attrition. For a team without a defensive spine, that is a door opening for the opponent, not for you.

Based on my experience watching matches across many levels, one thing repeats fairly consistently: Asian youth teams often fix individual errors within a half, but struggle to fix structural errors within the same match. Structural errors are fixed with the right personnel and many training sessions. Vietnam U23 are short of both.

I do not know who Vietnam U23 will meet in the quarterfinals. If it is South Korea or Saudi Arabia, the task becomes harder, and the team will need a low, compact plan with fast transitions rather than an open possession duel against physically stronger opponents. If the opponent is more evenly matched, the door opens wider, but how the team plays still decides.

What I want to see next is not more goals. What I want to see is a genuine defensive midfielder in front of the back three, a back line covering in the right rhythm, and an attack supplied with the ball in better postures. None of that is solved in a few days, but at least one of them can be chosen through personnel.

People remember me for three mispronunciations; I choose to remember myself for three decades on the pitch. The U23 players are the same. Three identical matches will not be remembered if the fourth is different. And in youth football, repairing a predictable weakness is a bigger victory than a lucky ticket.