Beyond the Trophy: Kim Sang Sik's Search for Tactical Answers at the FIFA ASEAN Cup

Late afternoon at a training ground in Indonesia, I watched Kim Sang Sik stand motionless for over ten minutes on the touchline, notebook in hand, his eyes fixed on a group of reserve players practicing small-sided combinations. It was not the moment of a champion basking in glory. It was the moment of a craftsman checking every joint on a ship before a long voyage. The FIFA ASEAN Cup 2026, the first FIFA-branded tournament in the region, runs from September 24 to October 5 in Indonesia, positioned not merely as another trophy. For me, someone who has followed Vietnamese football for over two decades, this is a rare test of endurance and depth.

The context of this tournament carries a crucial difference: after winning the ASEAN Cup 2026, Vietnam has little left to prove at the regional level. The pressure of being defending champions demands a place in the final, but Kim Sang Sik, the South Korean coach, sees further. He views this as a controlled experiment, a live-fire laboratory to reassess squad quality and the effectiveness of the tactical system ahead of the 2027 Asian Cup – the most immediate major objective.

Vietnam's opening match had no beautiful goals or spectacular saves. But I noticed a different detail: when the team was pressed high, the midfield struggled for the first fifteen minutes. That is a familiar signal. Over the past two years, when often entering matches as favorites, the team's strengths and weaknesses became hard to identify. Victories against deep-defending opponents did not reveal how the team handles being pressed. That moment showed me why Kim talks about needing 'more solutions' – not because he lacks confidence, but because he understands the gaps that stronger opponents will exploit.

This tournament is not where Kim Sang Sik proves he deserves the ASEAN Cup title, but where he must find answers to the question: can this team operate at a higher level? His approach reveals a methodical coaching philosophy. Instead of treating the tournament purely as a chance to defend a title, Kim is using it as a diagnostic tool. Rotating the squad, testing new personnel, and adjusting the system between matches are not signs of instability, but a deliberate strategy to prepare for greater continental challenges.

From my perspective, someone who has witnessed many development cycles of Vietnamese football, the most interesting aspect here lies not in match results, but in how Kim handles the psychological paradox of being champions. When a team consistently wins as favorites, complacency can creep into the dressing room. Kim's constant emphasis on this tournament as a stepping stone, a serious examination, is precisely how he keeps his players focused. He does not allow the team to think everything is finished.

But there is a misunderstanding from outside that I want to clarify. Kim using the tournament for experimentation does not mean he disregards results. On the contrary, having to experiment while achieving good results in a 12-day tournament with a dense match schedule is the harshest test of squad depth. Indonesia, with home advantage and the rapid development of their football, will be Vietnam's most dangerous opponent. If the two teams meet in the knockout stage, it will be the highest-pressure match of the tournament. A team in an experimental phase facing a team playing at full strength before their home crowd – that is a comprehensive psychological and tactical test.

What I await from this tournament is not whether Vietnam wins. The more important question is: after this tournament, how many answers has Kim Sang Sik found for the problems he posed? Will he have identified his preferred core for the 2027 Asian Cup? Will the young players given opportunities prove their worth? And most importantly, can the team demonstrate a new mentality – the mentality of a team ready to face greater challenges on the continental stage?

I still remember the 2026 World Cup in Russia, watching young goalkeeper Bui Tien Dung quietly packing his gloves after a friendly defeat. The silent pressure young players endure never appears on stat sheets. Just like what is happening in Indonesia now, Kim Sang Sik's experiments will not be judged by match scores, but by how the team operates in the most difficult moments. That is something only those who follow every training session, every match, can truly sense.

The FIFA ASEAN Cup 2026 will end, but the real journey of the Vietnam national team under Kim Sang Sik has only begun. This tournament is one brick in the long road toward the 2027 Asian Cup. The biggest question is not how far Vietnam can go in Indonesia, but whether the lessons learned here will be enough for the team to step up to a new level when facing opponents from Japan, South Korea, or Iran. An empty stadium does not stop the ball from rolling; it only makes the applause a beat late compared to the heart. And in this tournament, I listen to that heartbeat from the experimental decisions of a coach looking beyond the trophy in front of him.