Coach Bae Ji-won: 'Vietnam exposed many problems in the loss to Thailand'

On August 26, at Si Jalak Harupat Stadium (Bandung, Indonesia), Vietnam lost 0-2 to Thailand, surrendering top spot in Group B. The defeat not only exposed flaws in Vietnam's possession-based approach against an opponent that deliberately sat deep, but also raised questions about fitness management and squad depth under Coach Kim Sang-sik.

Context: 34 days after the championship

Just 34 days after winning the 2026 ASEAN Cup against Thailand (2-2 draw in the second leg of the final), Vietnam entered the rematch as defending champions. The expectation was physical and mental dominance. Reality was the opposite: Thailand won 0-2, their first win over Vietnam after 3 losses and 1 draw.

The tactical note: Thailand did not press high. They deliberately ceded possession, dropped into a compact low block, and punished Vietnam through counterattacks or long-range strikes. Sarach Yooyen's 10th-minute opener was the archetype: as Vietnam pushed high to control the ball, the space in front of the penalty area became a fatal vulnerability.

Numbers that don't lie

Although detailed xG or pass-map data is unavailable in the source, the qualitative indicators paint the picture: Vietnam had more possession but did not generate a proportionate number of clear chances. Thailand defended with discipline, using an experienced central midfield trio and full-backs who dropped deep at the right moments.

The core issue is not whether Vietnam had little or much possession, but that the team lacks a repeatable, automated mechanism to break down a deep defensive block. Coach Bae Ji-won, who has coached South Korean youth teams and has analytical experience in ASEAN football, identified two specific moments: Nguyen Tai Loc's offside-called breakthrough in the 37th minute and Nguyen Hoang Duc's penetrating run in the 58th. Both were convertible situations, but they came from isolated individual efforts, not from a structured attacking pattern.

"Holding the ball a lot is not an advantage for Vietnam's current players," Bae said. This must be read in context: Vietnam does not lack technically gifted players, but lacks players capable of "imposing attacking play" — creating chances from organized possession rather than waiting for quick transitions. Ngo Dang Khoa, a speed player, is ill-suited to positional play. This is a structural personnel issue, not merely a form issue.

Fitness management: When four pillars hurt together

The most concerning information is not the scoreline, but the injury list: Thanh Chung, Quang Hai, Xuan Son, and Hoang Duc were all absent or below optimal condition due to "continuous play over a short period." Four names, four pillars across three lines. This is a consequence of a systematic load-management problem, not an excuse.

Thailand, by contrast, entered the match with an experienced squad that had been rotated sensibly. Their central midfield trio controlled the half-spaces behind the strikers, while full-backs repeatedly dropped deep to form a back five when needed. The difference in squad depth was stark: when Vietnam needed to change the game, Coach Kim Sang-sik had no equivalent fallback options.

Counterintuitive angle: Thailand won by... not playing beautifully?

Interestingly, even in Thailand, this victory remains controversial. A section of Thai experts and fans criticizes Coach Anthony Hudson for pragmatic, aesthetically unappealing football. They want to see the possession-based play of Chanathip Songkrasin's peak era. But expert Be Bangkapong has a concise answer: "Just looking at the final result is enough."

This is the crux. In Southeast Asian football, where matches are often decided by moments rather than systems, organized pragmatism tends to beat unstructured aesthetic ambition. Thailand understands this. They accept criticism over style in exchange for results. And the result is top spot in Group B, while Vietnam — with the supposedly prettier approach — faces psychological pressure after defeat.

The paradox: if Vietnam continues to lose against opponents that deliberately sit deep, other teams will increasingly adopt this exact formula. Thailand has provided the blueprint. Indonesia, Malaysia, even the Philippines, can copy it.

What Bae Ji-won actually demands

Coach Bae did not merely criticize. He made three specific demands: increase ball circulation speed, maintain pressure after losing possession, and diversify attacking options. He also suggested Pham Gia Hung as a late substitute option — a striker capable of aerial duels, creating "chaos" in the opponent's penalty area.

But the fact that Bae has to propose such a specialized player reveals something deeper: Vietnam's development system produces specialists before complete players. A good striker needs not only speed, not only aerial ability, but also game-reading and adaptability to different match states.

What lies ahead?

Vietnam still has opportunities in Group B. But to go far, Coach Kim Sang-sik must solve three simultaneous problems: restoring the four pillars' fitness, expanding attacking options against low blocks, and building trust in backup alternatives.

This defeat does not define Kim's entire tenure. But it makes one thing clear: Vietnam's tactical thinking has not kept pace with the evolution of Southeast Asian football, where opponents no longer rely solely on speed and physicality, but on structure and adaptability. Thailand has proven this. The question is how Vietnam will respond — not in one match, but across an entire cycle.