Shin Tae-yong sends a discipline message to The Jakmania before Persija Jakarta meet Persib Bandung

Four days before the biggest match of Indonesian football this season, head coach Shin Tae-yong sent an unusual public message. He did not announce a lineup, analyse the opponent, or explain a tactical formation. He talked about the crowd. According to Indonesian media outlet VIVA, during a press conference on 8 September 2026, Shin Tae-yong called on The Jakmania, the passionate supporters of Persija Jakarta, to cheer loudly but stay disciplined. The match against Persib Bandung is scheduled to be played at Gelora Bung Karno Stadium (SUGBK), Jakarta, on 12 September 2026. This is not a routine fixture. In Indonesian football, a meeting between Persija Jakarta and Persib Bandung is often described as the “El Clasico” of the country. The match carries even more meaning because it will be the first time Persija have hosted Persib in Jakarta since 2026. For several seasons, Persija were forced to play their home matches outside the capital, sometimes as far away as Samarinda, because of security concerns and the risk of sanctions. As a result, the team lost the true atmosphere of a home match, and fans in Jakarta were unable to experience a big derby in their own city. Shin Tae-yong’s message, therefore, cannot be separated from that context. The request for order is not simply about manners in the stands. It is about whether Persija can reclaim the right to play big matches in Jakarta again. The coach knows the power of the SUGBK crowd. He once led the Indonesian national team in front of around 70,000 spectators at the same stadium. That experience showed him that a passionate crowd can lift the players, but only when it is guided in a positive direction. Interestingly, the reported press conference contained almost no tactical detail. There was no mention of a starting eleven, pressing structure, or specific plan against Persib. That may disappoint those looking for technical analysis, but it also reflects a clear priority: before solving tactical problems, a club must make sure the environment around the match is controlled. In a high-risk derby, crowd management can matter more than formation choices. It is possible that Shin Tae-yong’s appeal was coordinated with Persija’s management and security officials. The timing of the press conference, exactly four days before the match, suggests a deliberate attempt to set the right tone. The coach is asking supporters to trust the team, while making it clear that trust must be answered with responsibility. The history of Persija against Persib shows how severe the consequences can be when emotions go beyond control. A small group of irresponsible fans can damage the reputation of the whole club. Matches get moved to neutral venues, clubs receive bans, and the sense of belonging slowly disappears. This derby is therefore a test of maturity for Indonesian football as a whole. A contrarian view is that the pressure from the stands can also hurt the home team. If Persija fall behind in a tense atmosphere, the players may feel extra pressure from their own supporters. Shin Tae-yong understands this. He is not just building a wall from the crowd; he wants that wall to have discipline and organisation. The home ground was once a fortress. The pandemic and off-field incidents have taught Indonesian football that a fortress is only one variable. No one can be absolutely sure that a coach’s appeal will change the culture of the crowd overnight. But a match played safely and passionately in Jakarta would be a strong signal for the future. If not, the story of a home ground far away from home will remain a warning about the cost of indiscipline.