Persib Loses Jakarta Derby: Three Problems Igor Tolic Must Address

On the grass of Stadion Utama Gelora Bung Karno, the moment Ivan Mamut headed the ball in the 78th minute was not just a goal. It was a verdict on a system that had been trembling since the first minutes of the Indonesia derby, where Persib Bandung fell to Persija Jakarta 1-2 on September 12, 2026, in Week 2 of the BRI Super League 2026/27.

Mamut's goal came from a cross on the right flank — precisely the zone Persib had struggled with throughout the match. First Stjepan Loncar in the first half, then Kakang Rudianto in the second. Both were exploited in the same position, by the same attacking mechanism — overloading the right side, crossing into the center for Mamut to head. This was not luck. This was a carefully prepared plan targeting a crack Persib could not seal.

The Indonesia derby — the clash between the two biggest clubs in the archipelago nation's football — always carries significance beyond the three points. This defeat left scars not only on the standings but in the minds of fans and within Persib's dressing room. Noted football observer Mohamad Kusnaeni, known as Bung Kus, identified three core issues head coach Igor Tolic must resolve if he doesn't want the season to drift away from the loss.

First issue: Absolute dependency on Thom Haye

Thom Haye is Persib Bandung's heart. He organizes play, anchors the midfield, is where the ball goes before finding its path forward. But in the recent derby, that heart was strangled from the opening minutes. Bung Kus noted that when Haye was neutralized, Persib's entire attacking structure stalled. No second option, no backup plan when the central figure went silent.

This signals a play-building model too concentrated — all eggs in one basket. When opponents identify this, they simply assign one or two players to shadow Haye closely, forcing him backward or into turnovers. Instead of a functioning team, Persib became a single individual dependent on one man's performance.

Bung Kus also commented that Haye played too slowly, too calmly. This is a double-edged observation: it demands Haye be more active, yet contradicts the advice to reduce dependency on him. To genuinely reduce that dependency, Persib needs a second creative midfielder to share the burden — but in the current squad, that player doesn't exist. This is a personnel problem, not just a tactical one.

Second issue: Right-back position — a crack that can't be patched with a personnel decision

Ivan Mamut's decisive goal didn't come from a moment of bad luck. It came from a system that already knew its opponent's weakness and exploited it deliberately. Persija targeted Persib's right flank — the zone between midfield and defense where balls are played out from the back and crossed inside — with the patience of a predator waiting for prey to tire.

In the first half, Stjepan Loncar manned the right-back spot. He was exploited repeatedly, unable to match the speed of Persija's right-side attackers. Igor Tolic reacted with a mid-match personnel decision: replacing Loncar with Kakang Rudianto. This move showed Tolic isn't passive — he recognized the problem and tried to fix it immediately. But the effect was only temporary.

Bung Kus noted that Kakang Rudianto entered and "slightly improved" the right-side situation. But that word "slightly" says it all. Near the end, when Persija once again targeted this zone, the goal came. What matters is that both Loncar and Kakang Rudianto — different players in different halves — struggled in the same position. This is no longer an individual problem. This is a systemic issue: perhaps how the midfield protects the flank, how the defensive line shapes its rest-defense, or how the entire team transitions.

A significant detail Bung Kus mentioned was Sandy Walsh — another right-back option for Persib, referenced as the solution to this problem. But Walsh wasn't in the match. Unclear if due to injury, suspension, or other reasons. His absence transforms the right-back discussion from a personnel issue into a structural one: Persib lacks a strong enough backup for this position.

Third issue: Between calls for boldness and the reality of deadlock

Bung Kus offered a somewhat contradictory diagnosis. He demanded Persib reduce dependency on Haye, while simultaneously asking Haye to play more boldly, more decisively. These don't align unless Persib has a second creative midfielder compelling enough that opponents can't focus solely on Haye. Without that, every call to "reduce dependency" is merely rhetoric.

This is football's modern paradox: when a player is too good, he becomes both the team's weapon and weakness. Opponents know this and concentrate on exploitation. The coach can't drop him because no one of comparable quality exists, but also can't build multi-dimensional play when everything revolves around him. Igor Tolic is in this dilemma.

In squad construction, Persib shows signs of a "focus on a few key assets" model rather than building depth. Thom Haye, Sandy Walsh, Stjepan Loncar — these are all foreign or naturalized players carrying the expectations of a big club. But when one is absent, the thin backup layer reveals cracks. This is the consequence of investing in "premium single assets" rather than balanced squad building.

The halftime decision and its meaning

A notable detail: Igor Tolic made a halftime substitution — pulling Loncar, bringing in Kakang Rudianto. This signals a coach unwilling to be passive, recognizing the problem and acting. But as analyzed, this change addressed only the surface, not the root. When Persija once again targeted the known zone, the goal came.

This loss came in Week 2 — too early to conclude about the entire season, but enough to generate criticism waves. Persib didn't just drop three points; they revealed cracks any future opponent can see. If those cracks aren't sealed, they'll become vulnerabilities systematically exploited.

In this context, Thom Haye stands in a double position. He's simultaneously the most important player and the most criticized. Bung Kus publicly named him twice — once for the dependency, once for being "too slow, too calm." In a big club, public criticism of a star can create motivation, but also instability. How Igor Tolic manages this narrative in the dressing room will matter as much as tactics on the pitch.

Questions for the future

The derby ended, but open questions from this defeat await answers. Does Igor Tolic have enough time to rebuild the team, or will pressure intensify if results don't improve in the coming rounds? Will Sandy Walsh return as the solution to the right-back problem, or does the issue run deeper than personnel changes? Will Persib find a second creative midfielder to share the load with Thom Haye, or will this team continue revolving around one man?

In the SUGBK stands that night, Persija's cheers echoed not just from three points gained. It was applause from a team that saw its opponent exposed and struck precisely where it hurt. Persib might not have lost if luck favored them, but Persija's win wasn't random. It was the fruit of preparation, of reading the opponent, of not wasting any moment to exploit the cracks.

For Persib, the season has just begun. Points remain ahead, and if Igor Tolic listens to what the derby said, he'll have a clear map of what needs fixing. But if not, those cracks will widen, and one derby defeat could become the start of a season to forget.