ASEAN Cup 2026 Final: Indonesia Build a Back Three, Thailand Stake Everything on Chanathip

The final training session before the final, Ole Romeny trained alone. By himself, in the corner of the pitch, he ran short laps and then stopped, hands on hips, eyes fixed on the grass. In the technical area, John Herdman never took his eyes off him for a second. By the afternoon, the Indonesian national team announced its starting eleven for the 2026 ASEAN Cup final against Thailand: Emil Audero in goal, Romeny named as a starter. The announcement was not loud. But for anyone who has followed this team for months, Romeny training alone and then being confirmed as a starter is a signal that must be read slowly. Before it was a fact, it was a volley.

The final takes place on Monday, 5 October 2026. This is a clash between the two biggest football nations in Southeast Asia, a match where the smallest detail is examined under a magnifying glass. When I was still working in Singapore, every time these two teams met, the coffee shops along Jalan Besar filled up from six in the evening. Indonesians on one row, Thais on another, with a television hanging between them. Nobody talked during the first half. The stadium was empty, but the city still breathed with every pass.

The starting line-up Indonesia announced reveals a clear tactical choice. The back three consists of Kevin Diks, Elkan Baggott and Justin Hubner. The two wing-backs are Calvin Verdonk on the left and Shayne Oratmangoen on the right. The central midfield pair is Thom Haye and Joey Pelupessy. Up front, Romeny plays alongside two young names: Baker and Vickery. Emil Audero starts in goal.

On Thailand's side, the shape is entirely different. A five-man defence with Bureerat, Sayriya, Kaman, Bihr and Mickelson. A midfield three of Yooyen, Khamyok and Chanathip Songkrasin. Above them, two strikers, Supachai Chaided and Teerasak Poeiphimai. A thick defensive block, plus one conductor in the middle.

Put the two line-ups side by side, and the tactical story emerges before the ball is kicked. Indonesia build a back three, pushing the wing-backs high. Thailand drop into a five-man block, waiting for the counter. This is a contest between initiative and reactive defence, between the side that wants to hold the ball and the side that wants to swallow it.

What Indonesia's back three is for

The first thing to look at is Indonesia's three-man defence. Kevin Diks, Elkan Baggott and Justin Hubner are not a random trio. All three are tall, strong, and good in the air. Against a team using two strikers like Supachai Chaided and Teerasak Poeiphimai, deploying three centre-backs lets Indonesia control both opposing strikers with a spare man, while still keeping a free defender to cover. Structurally, this is a sensible choice.

But that sense is only the starting point. Three centre-backs allow the two wing-backs to push high. Calvin Verdonk on the left and Shayne Oratmangoen on the right will have to run all match, both to support the attack and to stop the counter. This role demands the highest volume of repeated sprints in the whole team. This is Indonesia's tactical fracture line: the two flanks run the most, and they are the most likely place to break when the match enters its final twenty minutes.

Against Thailand's five-man block, Indonesia's easiest attacking route is not through the middle. A five-man defence with Bureerat, Sayriya, Kaman, Bihr and Mickelson closes almost every gap in front of the box. Breaking through the middle against such a block is the hardest problem in modern football. So Indonesia's real supply is likely to come from the flanks, and, when the ball breaks loose, from set pieces.

Here, the height of Baggott, Hubner and Diks becomes a weapon. Corners and free kicks will be where Indonesia stake the most, because they have men to head the ball while Thailand must mark inside the box. The shortest route for Indonesia through the five-man block is not a pass, but a high ball from a set piece.

Audero and the central midfield pair

In goal, Emil Audero is the keeper. For a team that pushes high and takes initiative, the goalkeeper's job is not just to save. He must also be the one to start attacks, to read when to pass short and when to go long. When Indonesia push their back three up near the halfway line, Audero becomes a fourth defender in build-up situations. This is a role not every goalkeeper handles well.

Ahead of him, Thom Haye and Joey Pelupessy form the central midfield pair. Haye leans toward orchestration and long passing, Pelupessy toward ball recovery and screening. The division is fairly clear: one sets the tempo, one cleans up. But in a match where the opponent defends with five and counters through a single creative spearhead, Pelupessy will have to do more than clean up. He may be the man tasked with shadowing Chanathip all game.

If Pelupessy follows Chanathip, the space in front of the back three opens for Yooyen or Khamyok to run into. If he stays in position, Chanathip has room to carry the ball and play the decisive pass. This is one of John Herdman's hardest decisions in this match, and it will be shaped from the very first minutes, when both teams are still probing each other.

Chanathip – Thailand's only link

On the other side, Thailand's line-up tells a different story. A five-man defensive block, three midfielders in the middle, two strikers up top. Of those three midfielders, only Chanathip Songkrasin is a genuinely creative player. Yooyen and Khamyok lean toward muscle and intensity, while Chanathip is the one who sets the rhythm, who plays the final ball.

That creates a paradox. Thailand defend with five, but attack with almost one. Every quality counter they produce must go through Chanathip's feet. If Indonesia locks him down, Thailand lose almost their entire supply line to Supachai Chaided and Teerasak Poeiphimai. Chanathip is Thailand's only link: lock him down, and their whole attacking system is cut.

There are several ways to lock him down. Joey Pelupessy, the deepest of the central midfield pair, can shadow Chanathip all game. Or one of the three centre-backs can step up when Chanathip drops deep to receive. Both ways carry a price. If Pelupessy leaves his position, the space in front of the back three opens for Yooyen or Khamyok. If a centre-back steps up, the back three loses a man and Supachai Chaided finds room to run.

This is the problem John Herdman must solve across ninety minutes. When the stands fall silent, the ball begins to tell a story.

The blind spot of collective memory

Fans usually remember a final through its goals. They remember who scored, at what minute, and how. But finals between the two biggest teams in Southeast Asia are rarely decided by a beautiful moment. They are decided by smaller things: a corner, a lost ball in midfield, a wing-back running out of gas in the seventieth minute.

I have watched more than a few matches like this. They usually start slowly, then speed up, and end with a moment no one predicted. Collective memory keeps only that moment, not the whole process that created it. So when I look at a starting line-up, I am not looking for a hero. I am looking for where the match will break.

And that place, for me, is Indonesia's two flanks. Verdonk and Oratmangoen must both attack and defend in a match where they will hold the ball a lot. Holding the ball a lot means pushing high a lot, and pushing high a lot means the space behind them is wide open. If Thailand counter quickly through Chanathip, the space behind one of the two wing-backs is the most dangerous place on the pitch.

There is one small detail many overlook. Ole Romeny trained alone a day before the match, then was confirmed as a starter. In football, a player who trains alone and then starts is usually not a player at full fitness. It is a sign of managed minutes. Romeny can play, but he may not have the fitness to last the whole match at the highest intensity. Romeny starting does not mean Romeny is fit; it is the signal of a player whose minutes are being calculated.

This matters because Romeny is part of a front three. If he has to leave the pitch early, Indonesia lose a spearhead in the decisive phase of the match. And that decisive phase, like every final, lies in the last twenty minutes.

My position on the five-substitution rule

This season, the five-substitution rule has become the norm. In theory, it allows a deeper squad, more options, and reduced load on players. But I have a different observation. Five substitutions do not only widen the squad. They turn the last twenty minutes into a war of attrition.

When both teams have five substitutions, the match is no longer a contest of eleven starters. It is a contest of twenty-two players, split into several waves. The team with the better bench wins the late phase. For Indonesia, who hold the ball a lot and have two constantly active wing-backs, five substitutions are necessary to maintain intensity. For Thailand, who defend and counter, five substitutions are a chance to send on fresh legs just as Indonesia tire.

Seen from this angle, the final is not decided only by eleven starters. It is decided by the twelfth, thirteenth and fourteenth men, the ones sitting on the bench and waiting. In the last twenty minutes, when legs grow heavy, the team that substitutes more effectively will control the game.

And this is why I always say that modern football increasingly resembles a race of fitness rather than a purely technical performance. The ball slows down when the 90+2nd minute knocks on the door.

What stands out in Indonesia's attack

Beyond Romeny, Indonesia's attack also features Baker and Vickery, two young names. Placing two young players next to one whose minutes are being managed is a choice full of risk and full of ambition. The risk: if Romeny has to leave early, the two young players must carry the attack in the hardest phase. The ambition: if all three play well, Indonesia have a young, fast and unpredictable attack.

Against a five-man block, unpredictability matters more than pure technique. A young player can do things a veteran will not, simply because they do not know fear. In a final, that recklessness is sometimes what breaks the balance.

But I do not want to over-poeticise. Next to two young players is a Romeny whose fitness is uncertain. If Indonesia need a goal in the eightieth minute, who will they turn to? Baker and Vickery can create a moment, but a moment is not something you can plan. It is something you can only hope for.

Conclusion

The final between Indonesia and Thailand is a clash of two philosophies. Indonesia want to hold the ball, build a back three, push the flanks high, and find goals from set pieces. Thailand want to defend with five, counter quickly through Chanathip, and rely on two strikers up top. On paper, Indonesia have more options. But on the pitch, the match is not played on paper.

For me, the real question is not who is stronger. The question is: when the match enters its final twenty minutes, when legs are tired and gaps begin to appear, which team keeps a cooler head. Because in finals like this, the winner is usually not the team that plays better. The winner is the team that makes fewer mistakes.

And if you want to know where the match is heading, do not look at the goals. Look at Indonesia's two flanks, at Chanathip's feet, and at the bench. There, the fate of the final is waiting to be written.