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

I still remember that night, sitting in front of the screen with a notebook filled with hastily scribbled numbers. The match between Vietnam and Thailand in the group stage of the 2026 ASEAN Cup at Si Jalak Harupat Stadium, Bandung, Indonesia, ended 0-2. But what troubled me was not the scoreline, but a statement from Coach Bae Ji-won after the match: "Vietnam revealed many problems." That statement felt like a cold cut into fans' faith, and as an outsider in this profession, I understood that sometimes the truth lies not in what we see on the scoreboard, but in the murky gaps between passes. The context of this match cannot be separated from the memory of the 2026 ASEAN Cup final that took place just 34 days earlier. Vietnam had drawn 2-2 with Thailand then and won the championship with great emotion. Thailand entered the rematch with the mentality of a cornered animal, carrying a burning desire for revenge that Thai media dubbed the "underdog mentality." In football, that mentality is sometimes a more dangerous weapon than any tactic. And Coach Kim Sang-sik of Vietnam seemed to have underestimated the power of accumulated resentment. Thailand took the field with a clear plan: proactively drop deep, cede possession to Vietnam, and wait for counter-attacking opportunities. They did not dream of beautiful football, did not try to control the ball. They just wanted to win. Thailand's opening goal in the 10th minute was not just a moment of individual brilliance, but the inevitable result of a carefully prepared tactical calculation. After that goal, Vietnam was forced to push their formation higher, control more possession, but all of it was harmless sideways passing against a tightly organized Thai defense. What is notable is that Coach Bae Ji-won, with the eye of someone who has been through great battles, pointed out that holding a lot of possession is not an advantage for Vietnam's current players. This is a painful but accurate observation. Thailand's central midfield trio and their full-backs excelled at closing gaps, especially the half-spaces – those dangerous areas between the central corridor and the flanks. Vietnam lacked intelligent movements to stretch the opponent's formation, lacked high-precision through balls, and most importantly, lacked a player capable of creating breakthroughs with dribbling runs. In my notes, I marked two specific moments that Coach Bae mentioned. In the 37th minute, Nguyen Tai Loc had a breakthrough that was ruled offside. In the 58th minute, Nguyen Hoang Duc made a threatening run into the penalty area. Those were rare moments when Vietnam showed they had individual tools to threaten a deep-lying defense, but the problem is these moments were not repeated systematically. We have the ingredients, but lack the recipe. This brings me to a counter-intuitive angle: perhaps Vietnam's problem is not player quality, but tactical philosophy. Coach Kim Sang-sik seems to be trying to build a possession-based playing style on the foundation of quick transitions – a combination that is not easy. When facing a team that proactively drops deep like Thailand, Vietnam has no Plan B. They do not know how to create long-ball situations to exploit height, do not know how to create complex combinations to penetrate a packed defense. The lack of diversity in attack is a serious tactical blind spot. Another issue emphasized by Coach Bae is ball circulation speed and maintaining pressure. Looking at the statistics, I noticed Vietnam had more possession but could not convert territorial dominance into clear chances. This is a phenomenon of "sterile possession" – a concept I often note in my notebook. The team holds the ball in non-threatening areas, passes back and forth between center-backs and defensive midfielders, but never truly breaks through the opponent's defensive line. Fans may mistakenly believe the team is controlling the game, but in reality they are being led into a trap by the opponent. Thailand played exactly according to the script they wanted. They ceded space to Vietnam, let Vietnam draw meaningless sideways passes, then waited for opportunities to finish with sharp counter-attacks. Sarach Yooyen's goal from outside the penalty area is the clearest proof of their philosophy: simple, effective, and ruthless. No need for fancy combinations, no need for 70% possession, just one precise moment to end the match. I suddenly thought of an old story. Back when I was a young player at the Shanghai Shenhua academy, my coach used to say: "Football is not a competition for the most beautiful players, but a competition for those who can adapt fastest." Thailand did that. They adapted to the game state, adapted to the psychological pressure after the final loss, and adapted to Vietnam's playing style. Vietnam did not. Coach Kim Sang-sik kept the same tactical framework despite the opponent's changes. There is an aspect that Coach Bae mentioned but received little attention: the issue of fitness and injuries. Four pillars of Vietnam – Nguyen Thanh Chung, Nguyen Quang Hai, Nguyen Xuan Son, and Nguyen Hoang Duc – all suffered injuries after "playing continuously over a short period." This is not coincidence. This is the result of a systemic issue in scheduling and recovery management. In the modern football world, this is called periodization – a concept that Vietnam seems not yet to have mastered, especially during the transition between tournaments. The lack of squad depth was clearly pointed out by Coach Bae as a fatal weakness. Looking at Vietnam's bench in the match against Thailand, I did not see a replacement option of sufficient quality to change the game. This is a structural problem of Vietnamese football that cannot be solved overnight. Meanwhile, Thailand possesses a quality central midfield trio who have proven their class across many major tournaments. The experience gap in match play is undeniable. But here, I want to return to a bigger question. Is this defeat the end of Coach Kim Sang-sik's building process? The answer perhaps lies in how we perceive the problem. One loss does not define an era. Vietnam still has every chance in the group stage, and more importantly, still has time to fix mistakes. But to do so, the coaching staff needs to confront the truths that Coach Bae pointed out, rather than trying to explain them away with vague excuses about "lack of luck" or "the opponent being too strong." There is one detail I want to engrave in this article, as a reminder to myself. In football, the pitch never forgets, but it forgives. It does not care how many goals you conceded, does not care what percentage of possession you had. It only remembers the moments when you truly faced yourself. Vietnam needs such a moment. Thailand has had theirs. The question is whether Coach Kim Sang-sik and his players can find the answer before it is too late.