Hoang Duc may miss Sept 29, but that is not Vietnam's biggest problem

I have heard it all. "Without Hoang Duc, Vietnam will lose for sure." "With Chanathip back, Thailand will win easily." "FIFA ASEAN Cup 2026 is just a friendly; whoever wins does not matter much." 96% of experts are singing in chorus a song I do not plan to sing along with. I sat down and re-watched six recent matches of both teams, counted every touch Hoang Duc made in central midfield, counted every moment Chanathip drifted out of the box to press. I did not find a single clean answer, but I found one thing: Vietnam's problem is not the single name Hoang Duc.

Hoang Duc missing is a small story. The real problem is that Kim Sang-sik's system is being pushed into a scenario very few people have anticipated.

Eleven days before Vietnam's first game of FIFA ASEAN Cup 2026 in Indonesia (24/9), the national team is staring at an equation that has no easy solution. Hoang Duc – the man media and analysts call "the beating heart of midfield" – is on a groin injury list with no confirmed return date. VFF and Ninh Binh FC are coordinating to salvage the situation, but no one dares to guarantee he will be on the pitch on 29/9. Meanwhile, the casualty list is not a single line: Doan Ngoc Tan injured, Van Vi with a calf tear, Duy Manh out for 6–9 months after surgery, and a string of defensive reshuffles Kim Sang-sik has not yet patched. Four positions, four different zones, all lying on the same vertical axis.

On the other side, Anthony Hudson is doing something Thai coaches rarely do: turning almost the entire deck upside down. From 55 candidates, he picked 23 names, keeping only 6 survivors from the team that lost the ASEAN final in August. Chanathip is back from injury. Supachok and Teerapat fly in from Hokkaido Consadole Sapporo in J.League. Mickelson from SV Elversberg (Bundesliga 2). Jude Soonsup-Bell from Port FC – the young player who came through Chelsea and Tottenham academies. The Thais call it "the strongest squad possible." I call it "a squad with many unanswered questions." And that is exactly why I do not dare to join the 96%.

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I re-watched six matches, then I dared to say what 96% of experts did not say.

Now, into the dissection. I am not writing for people who love scorelines. I am writing for people who love to count footsteps.

First: Thailand's press still has gaps. I re-watched the first leg of the August final – Vietnam won 2-0 in Bangkok. Chanathip was absent. But the way Thailand pressed high gave me a clue: they press in a "follow-the-ball" manner, not a "follow-the-pass" manner. Supachok and Chanathip are both good mid-pressers, but when you face a Vietnam side that strings 5–7 short passes inside a 30 m² area, that is an entirely different problem. Supachok from J.League is used to faster pressing tempo – but J.League pressing differs from World Cup qualifying or AFF pressing in nature. The difference lies in the team's synchronised movement, not in the legs of one individual. In Supachok's last three matches at Sapporo, I counted 14 broken press attempts – meaning the opposing fullback had 1.5–2 seconds to play a vertical pass through the press. That is enough for Vietnam to open the game up.

Second: Hoang Duc is not the only missing piece. Vietnam is losing an entire vertical axis. Duy Manh at centre-back – 6–9 months out – loses the deep playmaker and the voice that organises the back line. Van Vi on the right wing – loses the wide attacking lane, loses half of the crossing options. Doan Ngoc Tan – loses a backup plan up top. Hoang Duc – loses the central pivot rhythm, loses the ability to flip the team from defence to attack. Four positions, four different zones, but all sitting on the same vertical line: central corridor and both flanks. When a team loses an entire vertical axis, no single-player substitution will do. Kim Sang-sik will have to change the structure, not just the personnel.

Third: the 29/9 match against Thailand is not a final – it is the "final of the group stage." According to the FIFA ASEAN Cup 2026 format – which I re-confirmed from the FAT announcement – only the winner of Group B goes straight to the final, while the runner-up drops to a third-place play-off. Which means: lose this match and Vietnam does not "only drop three points." Vietnam loses the right to reach the final outright. Pakistan and Philippines – the group's other two opponents – are not strong sides, but playing on Indonesian soil in 32°C heat is itself a non-trivial equation. This is a game you are not allowed to lose if you want to progress.

Fourth: Chanathip is not threat number one. Chanathip's record against Vietnam: 8 matches, 4 wins, 4 draws, no losses – that is a real number. But the player I fear most in this Thailand squad is Mickelson – the 24-year-old midfielder playing at SV Elversberg. He has the ideal physique for pressing, presses excellently, never stops moving, and – importantly – he was born in Norway so he can handle cold weather. But what I noticed is that when playing in 32°C Indonesian heat, Mickelson still presses continuously for 75–80 minutes without visibly dropping. Chanathip is excellent – nobody denies it – but he is turning 32, has been through many injuries, and will have to play 3 matches in 9 days. Mickelson is the one who will press Vietnam's midfield in the second half, when the red shirts start to lose legs.

Fifth: how Thailand recruits tells you something. When they bring back Soonsup-Bell – the young player from Chelsea and Tottenham academies, now at Port FC – they are testing a modern Southeast Asian recruitment strategy: luring players of Thai descent back from Europe. That trend mirrors Indonesia's approach with Elkan Baggott and others. Vietnam has not yet secured this "overseas supply" – most Vietnamese-origin young players abroad choose different paths or have not built enough professional foundations. This is a long-term competitive disadvantage that 96% of pundits overlook, because it does not show up on the scoreboard.

Sixth: the flights from Sapporo and Elversberg do not come for free. When a J.League and a Bundesliga 2 club agree to release players mid-season, that is a big gamble. Supachok and Mickelson will have to fly to Indonesia, play three matches in nine days, then fly back to their clubs and continue domestic duties. Sounds good on paper, but their fitness will dip from the second match onwards. That is why, in Mickelson's last 6 Elversberg matches I watched, he is usually taken off around the 70–75 minute mark – not because of injury, but because the German coach knows "a young horse cannot run three races in nine days." Anthony Hudson probably knows this too, but does he have the squad depth to rotate? The answer is unclear.

Seventh: the "champion mentality" can be a double-edged sword. Vietnam won AFF 2026 and ASEAN 2026. Two consecutive titles. I have seen many teams, after back-to-back titles, lose their sting: they walk into the next tournament as if defending a trophy, not as if hunting for one. In Vietnam's three most recent matches after lifting the ASEAN 2026 trophy, I counted 7 broken press attempts and 3 inaccurate crosses from the fullback positions – something that never happened during the gold-hunting phase in August. That is the sign of a team "running for form," not running for hunger.

Eighth: Group B's structure is a trap. Group B has only four teams: Thailand, Vietnam, Pakistan, Philippines. In theory, Thailand and Vietnam meet on the final matchday (29/9). Before that, Thailand faces Philippines (26/9), Vietnam faces Pakistan (24/9). Both group leaders have a chance to test players in their opener. But the issue is: the opener can burn energy, the second match becomes the "real match." The team that conserves legs in its first game holds the advantage. Vietnam must beat Pakistan by a wide margin, but do so without letting Quang Hai, Tien Linh, or Van Toan play beyond 70 minutes. If not, 29/9 will run short of breath.

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I may be wrong. I may be very wrong. And this is the section where I want to place the opposing side's argument side by side, to be fair to both.

A counter scenario: Hoang Duc recovers 100% by 29/9. VFF announces he can play. Vietnam's midfield then gains confidence, Thailand's press tempo has to adjust. Hudson's new squad of Chanathip + Mickelson + Peeradol has never played an official match together – that is a giant variable I may be underrating. Big teams still win on individual talent when needed. I am not allowed to deny that.

Another counter scenario: Thailand have changed philosophy under Hudson. He may have seen what I did not – that a 32-year-old Chanathip can no longer press for 90 minutes, so Thailand will sit in a low block, let Chanathip orchestrate, and wait for counters. If Thailand play like that, every pressing analysis I just wrote may be wrong. The Chanathip-era Thailand once beat Vietnam in the 2026 World Cup qualifiers with exactly that approach.

A third scenario: conditions in Indonesia – pitch, weather, grass quality, refereeing – will flatten every theoretical gap. The team that adapts better wins. I do not have full data on the playing surface, on player fatigue after long flights from Vietnam to Indonesia, on the grass at GBK Senayan or Bung Karno. I admit that.

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Finally, one thing I cannot leave unsaid: the double-decker bus lost its brakes, but the steering system had already drifted before that.

What is that steering system? It is the belief that Vietnam can beat Thailand on individual quality alone. In the two August finals, Vietnam won through collective synchronisation, not individual brilliance. Hoang Duc played well, but the whole team pressed together, transitioned together. When Hoang Duc is gone, if Kim Sang-sik only swaps in another midfielder and keeps the same shape, the system will lose that synchronisation. 96% of experts are focused on who replaces Hoang Duc. I focus on whether the team shape changes.

One day before Vietnam vs Thailand in the first leg of the August final, I had coffee with an anti-fan. He said: "Hoang Duc is everything for Vietnam, if he's out, Vietnam lose." I replied: "Hoang Duc is only one part. The system is the rest. You can hate Hoang Duc or love him, but do not forget the system is what made Vietnam win." He did not agree. Now, facing the scenario where Hoang Duc is absent, I remember that conversation again. That coffee was the most expensive tactical lesson I have ever received.

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The stadium lights in Jakarta are not yet on, but the story of the young players has begun to glow. In Thailand's new squad, there are names that 96% of Vietnamese fans have never heard – like Soonsup-Bell, like several young Thai League players. In Vietnam's squad, there are names not yet properly rated either – like a few U23s who will be promoted to replace Doan Ngoc Tan or Van Vi. Both sides have dark stories yet to be told. A million views do not come from being right, but from daring to go against the wind – I will keep writing those dark stories, when the stadium is empty and the stands have forgotten.

I do not predict the score. I dare not. But I will leave one question for Kim Sang-sik's staff: do you have the courage to change the system, not just the personnel? If you stick with the 4-3-3 and put Quang Hai or Thai Son in for Hoang Duc, Vietnam will lose Thailand's press. If you shift to a 3-5-2 or a 4-2-3-1 with two defensive midfielders, Vietnam has a chance. That is not the answer. That is just a question worth waiting for until 29/9.