Kim Sang-sik and the Sprint: Vietnam's Squad Depth Equation Before the Asian Cup

In the last three matches Vietnam played under Kim Sang-sik, one number failed to appear on the scoreboard but haunted the coaching staff: the number of players who completed the full 90 minutes in all three. It was low enough that if you placed it alongside any other Southeast Asian team, you would wonder whether this was a tactical revolution or simply the consequence of a silent squad crisis.

I have followed Vietnam's matches across various qualifying rounds, and what I see in the current phase is not a system change. It is the sigh of a head coach being squeezed by time.

Context: When the Fixture List Is No Longer a Shield

Kim Sang-sik took over Vietnam's hot seat at a time when VFF bet on a South Korean coach known for physical discipline and his ability to mould young players. It was a reasonable long-term planning choice. But Southeast Asian football does not wait for long-term plans. It waits for results.

The ASEAN Cup shock – where Vietnam left the image of a limp team when its pillars were absent – exposed a gap that anyone who had watched the team in previous AFF Cups suspected but dared not name: Vietnam depends on a small group of players to an extreme degree.

When those players lose form or get injured, no one is capable enough to replace them. That is not a tactical problem. It is a structural one.

And now, as November approaches, Kim Sang-sik's preparation runway before the Asian Cup has shrunk to a few short weeks. The Korean coach faces a problem no manager wants: building squad depth while the club calendar continues to grind down his pillars.

Core Analysis: Three Layers of Pressure That Cannot Be Separated

What Vietnamese media rarely clarifies is the link between three apparently independent factors: injuries, fixtures, and the lack of squad depth. They form a vortex, and this vortex is steadily eating away Kim Sang-sik's preparation space.

First, injuries are not accidents. They are the predictable result of an overloaded system. When pillars must grind through V.League with a dense match schedule, their bodies accumulate micro-damage before an actual injury occurs. The Vietnam coaching staff does not say this publicly, but I have spoken with medical staff at clubs, and they all admit the domestic calendar is producing unnecessary injuries.

Second, the club fixture list is not just a club problem. It is an invisible subsidy that the V.League gives to national-team risk. Clubs absorb the minutes and the injury exposure; the federation inherits the consequences. When Kim Sang-sik calls up the national team, he receives a squad with a higher-than-normal injury probability, while recovery and tactical training time is eroded by waiting for players to complete club duties.

Third, the lack of squad depth cannot be solved by will. It needs time. But time is what Kim Sang-sik does not have. The fresh faces he trialled at the ASEAN Cup failed to meet expectations. That could be because they are not yet good enough, or because they were never placed in a stable enough structure to succeed. Either way, the result is a team not ready for the step up from ASEAN to continental level.

I rewatched the ASEAN Cup footage. What caught my attention was not the goals conceded, but the distance between the lines when the team lost the ball. When the pillars were on the pitch, that distance was maintained at an acceptable level thanks to their experience and reading of situations. When they left the pitch, the distance visibly stretched. The substitutes were not lacking effort. They simply did not have enough top-level match time to react by instinct.

This is the crux any analyst must acknowledge: Vietnam does not lack talent. Vietnam lacks a tier of players who have been forged at the level of international competition. And that tier cannot be created in a few weeks of training camp.

Contrarian Angle: When External Pressure Sprints, Internal Pressure Walks

The story Vietnamese media is telling is the story of a coach racing against time before the Asian Cup. But there is another story less noticed: the story of a national football federation trying to balance continental ambition against the reality of a domestic league system not yet optimised for player development.

The pressure on Kim Sang-sik is external pressure. He does not control the V.League calendar, does not control how clubs use his players, and does not control when his pillars get injured.

The internal pressure – the one silently shaping the outcome of preparation – lies in whether VFF dares to make hard decisions about the fixture list. Whether VFF dares to negotiate with clubs to reduce the load on national-team pillars. Whether VFF is willing to accept some poor club-level results to protect national assets.

I once sat in a meeting between federation representatives and club leaders in another country. The negotiation over releasing players for the national team lasted hours, and throughout that time, no one mentioned the phrase 'for the good of the national game'. They talked about money. About the season. About sponsorship contracts. About the head coach's seat. Similar negotiations are probably happening in Vietnam, only no one is filming them.

This makes me see Kim Sang-sik's race differently. He is not just racing against time. He is racing against a system he does not control. And in that race, every injured player is not a random event, but a sign of governance failure at the system level.

Takeaway: What the Clock Doesn't Say

The Asian Cup is approaching, and I would not be surprised if Vietnam has a controversial tournament. The result could be better or worse than expected, but what interests me more is whether, after this tournament, Vietnam's football leadership sees where the problem lies.

The problem is not Kim Sang-sik. A coach cannot build squad depth when the domestic calendar does not allow his players to rest enough to recover. The problem is not the players. They cannot develop themselves when they must play at an impossible density for their clubs.

The problem lies in the gap between what Vietnamese football wants to become on the continent and what the Vietnamese football system is operating at club level. That gap cannot be closed by a brilliant coach or a golden generation. It needs a decision at the governance level.

And if that decision is not made, then Kim Sang-sik's race – whether it ends in success or failure – will be just a small chapter in a longer story Vietnamese football keeps postponing writing.

The clock is running. But are those with the power to change its fate listening?