Vietnam face new test at FIFA ASEAN Cup 2026: Coach Kim's time puzzle

There is a moment I remember vividly from my commentary career: a League Two match where I mispronounced a player's name three times in ten minutes. Afterwards, I spent a month reviewing the footage, counting every touch. I discovered there were seventeen passes leading to the equalizer – a detail the whole world missed. That lesson taught me: in football, preparation time is never infinite, and what happens before the match often determines what happens on the pitch. Now, the Vietnam national team faces a similar puzzle. The FIFA ASEAN Cup 2026 is approaching, and head coach Kim Sang-sik must confront an unprecedented challenge in his tenure: significantly compressed national team assembly time. While theory suggests he has about two weeks to work with his squad, reality is far harsher – a core group of players from Cong An Ha Noi (CAHN) can only join camp for five or six days before the team departs for Indonesia. The context lies in overlapping schedules. CAHN, the club that has supplied many of Vietnam's national-team players in recent times, still has two important matches before the camp: a Champions League Elite fixture against Osaka on September 15 and a V-League match against Dong Nai on September 20. Seven CAHN players called up to the national team – including Quang Hai, Dinh Bac, Nguyen Filip, Van Hau, Van Do, Thanh Long, and Quang Vinh – will have only a few days to familiarize themselves with the tactical system before the Group B opener against the Philippines on September 26. This creates an interesting paradox. Tactically, Coach Kim's system – a possession-oriented framework with quick transitions – is nothing new. It is a standard framework in international tournaments. But the problem lies not in design, but in execution under compressed timelines. Set-piece patterns, pressing triggers, inter-line communication – all of these require repetitive practice. With five or six days, even the most experienced teams struggle to achieve perfect cohesion. I have followed many previous ASEAN Cup editions, and I notice a clear difference. In earlier tournaments, Coach Kim had considerably more favorable conditions – longer preparation time, less overlapping schedules. The ASEAN Cup 2026 victory created a high baseline of expectation. But the analysis indicates that Vietnam still have several technical issues to improve following that tournament. With reduced preparation time, these issues are unlikely to be systematically addressed before the opener. What is interesting is how opponents are reacting. The analysis shows that opponents are expected to field their strongest squads. The Philippines, Vietnam's opening opponent, is not a traditional Southeast Asian powerhouse, but they have clear motivation. An underdog with fuller preparation facing a stronger but still-assembling team – that is a recipe for surprises. One detail I particularly noticed: the asymmetry in physical conditioning. CAHN players arrive from a congested schedule – a Champions League Elite match on September 15, a V-League match on September 20 – carrying accumulated fatigue. Meanwhile, non-CAHN players who have been in camp longer may peak at different times. This disparity complicates the implementation of a high-intensity pressing system. But I want to offer a counterintuitive perspective. Perhaps the issue is not whether Coach Kim has enough time, but how we define preparation. In modern football, we are obsessed with days of camp, training sessions, minutes played. But there is something numbers cannot measure: the tacit understanding between players who have played together for years. Quang Hai and Van Hau do not need to train together to know how to combine. They have played together for a long time. The question is: can familiarity compensate for the lack of tactical rehearsal time? I think the answer is yes, but only to a certain extent. Familiarity helps with basic coordination, but not with complex set-piece routines or conditional pressing systems. That is why I believe Coach Kim may have to simplify tactics. Instead of an intricate positional system, he might shift to a more direct, transition-based approach – a reasonable choice under time constraints. There is a story I remember from the 2026 World Cup. Luka Modric missed a penalty in the 116th minute, but Croatia still won on penalties. In the moment Modric fell and then stood up, I realized that mistakes are just commas, and the story continues on the next page. The Vietnam national team is facing a similar comma. Short preparation time is not the end – that is where the light gets in. I come to the stadium to listen, not just to watch. And what I hear from this story is an important truth: the FIFA ASEAN Cup 2026 is not just a test of Vietnam's ability, but also a test of Coach Kim's capacity to adapt when he no longer has the luxury of ideal preparation. This is a test of flexibility, of decision-making under imperfect conditions. The match against the Philippines on September 26 will be a litmus test. If Vietnam can overcome this challenge, they will prove that their strength lies not only in preparation time, but in squad depth and mutual understanding. If not, the story of inadequate preparation will become an excuse – and in football, excuses are never a strategy. People do not remember the match; they remember how a person stood up. And I believe the Vietnam national team, with all its time challenges, still has the quality to stand up. The match ends, but the poem remains unfinished.