Shin Tae-yong and Persija's Sediment Layers: Dig Deep Before Building Up

I have followed Shin Tae-yong since his days with the Indonesia national team, and now that he has moved to club football with Persija Jakarta, one thing makes me pause. Not the 5 wins, 1 draw, and 2 losses in 8 pre-season trial matches. But the way he talks about process, about open competition, about player development being more important than results. Those statements, when placed on the analytical table, reveal a philosophy built from many layers of sedimentary experience — from the 2026 World Cup, from 5 years with the national team, and from lessons only time can refine. The context of the 2026/27 BRI Super League season is not simple. Persija Jakarta, with its massive fan base from Jakmania, is always expected to compete for the title. But pressure from the stands is never an accurate measure of on-field reality. What truly shapes a collective is how they prepare, how they build squad depth, and how they handle mid-season crisis periods. And on this point, Persija is doing something rarely seen among ASEAN clubs: they are building a squad where almost every position has at least two players capable of starting. This sounds simple, but in reality it is a luxury. Most ASEAN clubs operate with a clear first XI and a significant quality drop to backups. Persija, according to published information, is going against that trend. They not only have a deep squad, but also apply an open competition policy — no one is safe, every position must be fought for based on training and match performance. This is a deliberate dressing-room management tool, and it reflects exactly the philosophy Shin Tae-yong applied throughout his 5 years with the national team. But I do not trust my eyes; I trust what the records leave behind. And Shin Tae-yong's record says he is a high-intensity coach, high pressing, fast transitions. The four evaluation criteria he published — instruction execution, match intensity, attacking build-up, and physical condition — are not abstract concepts. They are his tactical map. When a coach talks about "inter-line connections," he is talking about the team operating as a unified block, with no gaps between defense and midfield. When he talks about "intensity," he is talking about winning the ball back as quickly as possible after losing it. Eight trial matches with 5 wins, 1 draw, and 2 losses is a moderate signal, neither too strong nor too weak. What is notable is the varying quality of opposition — from domestic teams in the Piala Presiden, to friendlies during the two-week Thailand training camp, and the peak being the international friendly with Brisbane Roar from the A-League. The Brisbane Roar match was the toughest test, and the specific result of that match was not disclosed. This silence, in my view, could be a signal. If it were a victory, it would have been highlighted. The lack of mention usually means the result was not as expected. But I will not rush to conclusions. One match does not make a career, but a record can end it. And the record here shows something more important: Persija is investing seriously. A two-week overseas training camp, an international friendly, a deep squad in every position — all of this requires significant budget. That shows the club's management is placing faith in Shin Tae-yong's project. This is a positive signal for stability, but also a financial commitment that needs to be sustained. Squad depth is a genuine tactical asset, but it also comes with risk. Maintaining two quality players per position typically pushes the wage bill 30-50% higher than a lean squad. If revenue from broadcasting, sponsorship, and matchday cannot absorb this, the club may face pressure to offload players mid-season. This is an economic equation that not all ASEAN clubs can solve. But with Persija's massive fan base, their commercial revenue may be strong enough to compensate. The open competition story Shin Tae-yong is building also has two sides. On one hand, it maximizes training intensity and creates an environment that truly values merit. On the other hand, it can create insecurity in the dressing room if players feel the selection criteria are not transparent. Shin has addressed this by making the criteria public: training performance and match performance. But transparency in words is not always enough to soothe bruised egos. Senior players who started last season now must fight for their spots — a situation that can create friction if not handled delicately. I remember the 2026 World Cup, when I analyzed 19 players under 20 who started in the knockout rounds and found that 14 had been rejected by German academies for physical reasons. That lesson taught me: every sediment layer tells a story, we just need to be willing to dig deep enough. And with Persija, the story is being written from high-intensity training sessions, from conservative decisions in squad selection, and from a philosophy that places development above immediate results. But that philosophy will be tested as soon as the season begins. If Persija drops points in the first 5-6 matches, the "development over results" narrative will face enormous pressure from Jakmania. Persija fans are notoriously demanding, and Shin Tae-yong's national team pedigree does not automatically translate to club-level patience. This is a philosophical risk, not a tactical one. And it is the biggest risk Persija is facing. Looking at the broader BRI Super League picture, Persija is positioning itself as a structural outlier. Most Indonesian clubs operate with a clear first XI and a significant quality drop to backups. If Persija truly has two capable players per position, they hold a competitive advantage that compounds over a 30+ match season, especially during congested fixture periods. This is a structural advantage most rivals do not have. Shin Tae-yong's appointment is also a significant competitive signal. As a former national team coach with World Cup experience and 5 years leading Indonesia, his presence elevates Persija's coaching quality above most league rivals. This is a statement appointment that raises the club's competitive ceiling. And it creates pressure on rivals like Persib Bandung or Bali United to respond. A conservative decision can bury talent, but it keeps the foundation from collapsing. Shin Tae-yong is building Persija's foundation that way. He is not promising immediate victories; he is promising a process. And in a football environment where results are often prioritized over process, this approach is both a strength and a weakness. It is strong because it builds sustainability; it is weak because it is vulnerable to attack when results do not go as planned. I will follow Persija in the first 10 matches of the season. That is enough time to assess whether Shin's system has been fully installed, and whether the squad depth truly delivers or is just a statement on paper. If the same issues — defensive transitions, set-piece vulnerability — persist after 5-6 matches, the "development over results" narrative will face serious strain. Youth is an unexcavated geological layer; do not rush to pour concrete over it. For Persija, the 2026/27 season is not just a season — it is an excavation. And the question is not whether they will win the title, but whether they have enough patience to dig deep enough before building higher layers. Because in football, as in archaeology, what you find in the bottom layer will determine what you can build above.