Mamut scores on debut as Persija win Jakarta derby in dramatic fashion

The moment Denis Kolinger overlapped down the left flank in the 23rd minute and delivered for Alexander Jeremejeff to finish, I knew Persija had complete control. That was the opening 15 minutes with 68% possession — a figure I had to check three times before believing. The Jakarta derby between Persija and Persib has always been Indonesian football's biggest event, often compared to the El Clasico of the archipelago. In Matchweek 2 of Super League 2026-2027, hosts Persija claimed a 2-1 victory through Jeremejeff's opener and a late winner from new signing Ivan Mamut in the 90+4th minute. This is a match I had to dissect carefully as it reveals much about the tactical nature of both teams. From the start of the first half, Persija deployed their typical possession-based game with a 4-3-3 formation. The left flank became the main attacking avenue, where full-back Denis Kolinger repeatedly pushed forward to unbalance Persib's defense. Swedish striker Alexander Jeremejeff operated very flexibly between the lines, constantly moving to receive and creating space for teammates. The result was the opening goal in the 23rd minute. However, after following Southeast Asian football for over three decades, I've noticed a pattern: teams that dominate possession in the first half often commit a serious tactical mistake in the second — unconscious complacency. As predicted, Persib began their revival after halftime. The visitors shifted to a stronger counter-attacking approach, pushing their lines higher and pressuring Persija's midfield. Luka Menalo's header was saved, followed by a shot hitting the post — moments showing Persib's attacking threat was being effectively exploited. In the 81st minute, Balsa Sekulic equalized for Persib at 1-1. That's when I realized Persija was on the brink. The hosts could no longer maintain their first-half control, the midfield lacked balance between attack and defense. But football always has moments that data cannot explain. In the 90+4th minute, new signing Ivan Mamut — just brought on — moved into the box and scored the decisive goal. A 2-1 victory for Persija. Now, let me analyze what commentators often overlook: Persija didn't win this match through superior play, but through an individual moment saving them. Their second half was a tactical disaster — Kolinger completely disappeared from the game after the 60th minute, the midfield lost control, and Persib dominated possession for nearly 30 minutes. A hundred-million deal doesn't buy victory; it only buys a more complex problem — and Mamut just solved that problem with one header. Persib lost but their second-half process deserved at least a draw. The 11-minute gap between their equalizer and the final concession reveals a serious psychological issue: this team doesn't know how to protect a scoreline when under pressure. Persib's manager now faces the familiar pressure cycle after a derby defeat — if the next match isn't won, his seat will shake. Tactically, Persija showed excessive dependence on Jeremejeff's creativity. When this striker is tightly marked or fatigued, the team has no clear Plan B. Mamut is a situational solution, not a foundation for a sustained title challenge. However, I must acknowledge that Persija's recruitment department read the situation correctly. Mamut isn't a stopgap signing — he's a custom-ordered piece to solve a specific problem — and the test was proven immediately. The next derby will be Persija's real test. If they continue relying on late goals, the system will collapse against opponents better equipped to exploit the gaps left in the second half.