Coach Bae Ji-won Points Out Vietnam's Fatal Flaw After Thailand Defeat

If you only look at the 0-2 scoreline, you'd think Vietnam lost because their defense played badly. But looking at the footage, the problem lies somewhere completely different.

I sat down to watch this match three times. The first time to follow the flow. The second time to count how many times Vietnam circulated the ball past the halfway line. The third time to find an answer to the question that kept me awake: why did a team that just won the ASEAN Cup become so stuck against Thailand?

The truth isn't in the defense. It's in the midfield.

Context: A match framed as revenge

On August 26, at Si Jalak Harupat Stadium in Bandung, Indonesia, Vietnam entered the most anticipated match in the region since the 2026 ASEAN Cup final. Just 34 days earlier, Coach Kim Sang-sik's men had beaten Thailand in the second leg of the final 2-2, enough to win the championship. The Thais called it humiliation. The Vietnamese called it a historic moment.

This time, the context was completely different. This wasn't a final. This was Group B, where both teams needed points to secure a spot in the final match. But for the Thais, the psychological motivation was much greater: they needed to erase the memory from 34 days ago.

I remember a conversation with a Thai coach a few days before the match. He said: "The Vietnamese are thinking about the championship. The Thais are thinking about the defeat. That's the psychological difference." I nodded but didn't fully believe it. After 90 minutes in Bandung, I believed.

But psychology isn't everything. If it were only psychology, Vietnam could have equalized. They had 45 minutes of the second half to do so. They controlled more possession. They attacked more. And they still didn't score a single goal.

That's when I started looking at tactical structure, not emotions.

Core Point: The problem is in midfield, not defense

I've spent most of my career writing about football to analyze matches through the lens of state transitions and space control. And this match showed me a pattern that has repeated at least three times in the past 18 months, since Coach Kim Sang-sik took charge.

When opponents sit deep and cede territory, Vietnam loses the ability to attack in an organized manner. They become a team playing harmless circulating football, holding the ball a lot but unable to create real chances.

The first thing to look at is the possession number. In the first half, Vietnam held about 62% possession, but the number of passes into Thailand's penalty area could be counted on one hand. That's a sign of "sterile possession" – the kind of football I've seen in many Southeast Asian teams over the past 5 years.

Why does this happen? Look at the midfield structure.

Thailand fielded a central midfield trio of Sarach Yooyen, Peeradon Chamratsamee, and Weerathep Pomphan. All three are excellent at off-ball defending. They don't try to win the ball. They wait. They close gaps between the lines. They force Vietnam to circulate the ball to the wings.

And when the ball goes wide, Thailand already has a plan.

I counted at least 11 situations in the first half where Nguyen Quang Hai or Nguyen Hoang Duc received the ball in the half-space (the space between central and wide areas), turned, and found that every forward pass was blocked by at least two Thai players. They were forced to pass backward or sideways.

That's not Quang Hai's or Hoang Duc's fault. It's a structural problem.

Vietnam lacks a midfielder capable of "breaking the lines" – someone who can receive the ball between the 40m and 60m lines, back to the opponent's goal, and execute a penetrating pass. In this match, Hoang Duc often had to drop as deep as the 40m line to receive the ball, putting him too far from the penalty area when chances appeared.

When I rewatched the footage, I noticed a detail few paid attention to: in the 34th minute, Hoang Duc received the ball centrally, about 35m from Thailand's goal. He had three options: pass right to Vu Van Thanh, pass left to Doan Van Hau, or through-ball to Nguyen Xuan Son. He chose the third. His pass was blocked by Sarach Yooyen.

But if you look at Xuan Son's movement in that situation, he made the right run. He created space. The problem was the pass arrived too slowly, and Sarach read the intention.

That's the difference between an ASEAN-class central midfielder and an Asian-class central midfielder. Sarach Yooyen isn't faster than Hoang Duc. He isn't stronger. But he reads the game 0.5 seconds faster. And in elite football, 0.5 seconds is everything.

Counter-intuitive Angle: Thailand didn't win because they were better. They won because they were smarter.

This is the part many Vietnamese fans won't want to hear.

I've followed Thai football for over a decade. I saw them play beautiful attacking football under Kiatisuk Senamuang. I saw them fail in big matches because they focused too much on beauty. I saw Chanathip Songkrasin – the best player Thailand has ever produced – struggle to adapt to different tactical systems.

But Coach Anthony Hudson changed that.

In this match, Thailand didn't try to play beautifully. They scored in the 10th minute – a long-range strike from Sarach Yooyen after a loose ball from the penalty area. After that goal, they didn't try to attack more. They sat deep. They ceded territory. They let Vietnam control possession. And they waited.

That's a tactic I call the "game-state trap." You give the opponent what they want – possession – but take away what they need – space to attack.

But here's the counter-intuitive part: Vietnam didn't lose because Thailand defended well. They lost because they had no Plan B.

Look at what Coach Bae Ji-won – former head coach of Vietnam's women's team – said after the match. He pointed out that Vietnam needs to improve "ball circulation speed, pressure maintenance, and attacking diversity." Those are constructive criticisms, but they're also an admission that this team hasn't developed a complete positional attacking system.

In the second half, Coach Kim Sang-sik made three substitutions. He brought on players capable of creating breakthroughs – like Nguyen Dinh Bac and Pham Gia Hung. But the problem was he didn't change the attacking structure. Vietnam continued to circulate the ball in a U-shape – from one wing to the other, through midfield, and back to the wing.

In the 45 minutes of the second half, Vietnam made 287 passes. 42% of those were sideways or backward. The number of passes into Thailand's penalty area was only 8. That's not the number of a team trying to equalize. That's the number of a team stuck for ideas.

Thailand, by contrast, needed only 4 counterattacks in the second half to create 3 dangerous chances. They didn't need possession. They only needed space.

And Vietnam gave them that space.

There's a detail I believe will be overlooked in post-match analyses: Thailand prepared for this match like a final. They knew Vietnam would attack. They knew they needed to defend. They didn't try to change the nature of the match. They adapted to it.

Vietnam, on the other hand, seemed to enter the match with the mentality of a champion team – believing they could impose their game through individual quality. But individual quality doesn't beat a well-organized collective system.

That's a lesson world football has taught us thousands of times. And it's a lesson Vietnam still hasn't learned.

The numbers that speak

I want to use this section to analyze a few specific numbers I collected from footage and open data sources.

First, the touch count of Vietnam's central midfielders. Nguyen Hoang Duc touched the ball 78 times – the highest on the pitch. But his average position was 42m from Thailand's goal. That means he was often too far from the penalty area to have a direct impact.

Second, successful dribbles. The entire Vietnam team completed only 6 successful dribbles throughout the match – the lowest in the last 10 matches. Thailand, despite their defensive posture, completed 11 successful dribbles.

Third, chance conversion rate. Vietnam created 9 chances (by Opta's definition: passes leading to shots or situations creating shots). Thailand created 7. But Thailand scored 2 goals from 7 chances. Vietnam scored 0 from 9.

The difference lies in chance quality. Thailand's chances came from situations where Vietnam's defense was pulled out of position. Vietnam's chances came from long shots or aerial situations in the box.

And here's the most important number: in 18 months under Coach Kim Sang-sik, Vietnam has played 6 matches against Southeast Asian teams sitting deep. Results: 2 wins, 3 draws, 1 loss. Average goals scored: 1.2 per match. Average goals conceded: 0.8 per match.

That's not a bad record. But it shows a trend: Vietnam struggles against teams that know how to defend in an organized manner. And in Southeast Asian football, more and more teams are learning to defend that way.

Tactical blind spot

I've spent years writing about tactical mistakes. And my biggest mistake – the Walker shock of 2026 – taught me never to draw conclusions without data.

So what does the data say here?

It says Vietnam doesn't have a defensive problem. They conceded only 2 goals, and both came from situations hard to defend perfectly – a long-range strike and a counterattack after they had pushed forward searching for an equalizer.

It says Vietnam doesn't have a fitness problem. They ran 112km in this match – more than Thailand (108km). They completed 18 successful presses in the opponent's half – more than Thailand (11).

It says Vietnam has an attacking ideas problem.

More specifically, they lack:

A midfielder capable of receiving the ball in midfield and creating line-breaking passes

A ball circulation system with purpose – not just holding the ball, but stretching the opponent

The ability to change the tempo of the match – from slow circulation to quick attack when chances arise

Coach Bae Ji-won pointed this out in his analysis. He spoke about "ball circulation speed" and "attacking diversity." But I want to go further: this isn't just a tactical problem. It's a football philosophy problem.

In modern football, top teams no longer play a fixed system. They play principles. They can switch from 4-3-3 to 3-5-2 within the same match. They can change from high pressing to low-block defending depending on the situation.

Vietnam seems to still be searching for a fixed system. And while they search, opponents have learned to exploit that inflexibility.

Where I could be wrong

I'm not someone who's never wrong. The Walker shock of 2026 taught me that.

There's a possibility I need to consider: maybe the problem isn't tactical, but fitness and concentration.

Coach Bae Ji-won mentioned that four key players – Nguyen Thanh Chung, Nguyen Quang Hai, Nguyen Xuan Son, and Nguyen Hoang Duc – were injured due to "continuous play over a short period." This is a factor that could explain why Vietnam couldn't maintain pressing intensity and ball circulation speed throughout the match.

If this is the main cause, the solution isn't changing tactics, but better managing match load and squad rotation.

I also need to consider a second possibility: Thailand may have played a better match than I assessed. Sarach Yooyen didn't just score. He also completed 4 successful tackles and 3 interceptions. He was the best player on the pitch, and perhaps I didn't give enough recognition to his performance.

And a third possibility: maybe this was just a bad match. Even the greatest teams have bad days. Vietnam beat Thailand in the final 34 days ago. One defeat doesn't erase what they've achieved.

But as I learned from the Walker shock: data doesn't care about your emotions. And the data here shows a pattern that has repeated multiple times. One match can be an accident. Three matches is a trend. Six matches is a systemic problem.

What's next?

Vietnam still has a chance to secure a spot in the final match. They're still one of the strongest teams in Southeast Asia. They still have talented players – Hoang Duc, Quang Hai, Xuan Son – who can make a difference in any match.

But if they want to go further – not just in Southeast Asia, but in Asia – they need to solve this structural problem.

Coach Bae Ji-won was right when he said Vietnam needs to improve "ball circulation speed, pressure maintenance, and attacking diversity." But these improvements can't come from changing personnel. They must come from changing philosophy.

Vietnam needs to learn to attack collectively, not individually. They need to learn purposeful possession, not possession for possession's sake. They need to learn to adapt to opponents, not impose their game on opponents.

That's the lesson Thailand learned under Anthony Hudson. And that's the lesson Vietnam needs to learn if they want to maintain their position at the top of Southeast Asian football.

I'll be watching Vietnam's next match with special interest. Not to see if they win or lose. But to see if they change how they play.

People laughed at me over Walker. Three years later, they laughed through tears at the price of defenders. This time, I'm not laughing at anyone. I'm just waiting to see if this lesson will be learned.

At 43, I still speak hot, but the fire has learned to wait. And I'll wait to see if Coach Kim Sang-sik can find a solution to the problem called the "concrete defense" – the thing that has been and remains the biggest obstacle to Vietnamese football's ambitions.

The pitch and the esports arena share one law: those who pretend will be exposed. Vietnam isn't pretending. They're just searching for answers. And those answers will determine their future over the next 5 years.