HNK Segesta Sisak produced one of the biggest surprises of the Croatian Cup on 9 September 2026, defeating top-flight NK Osijek 3-1 at home. On a memorable evening in Sisak, the lower-league hosts played with intensity and belief from the first minute, turning a heavyweight clash into their own giant-killing story.

Cup upset in Sisak

The Croatian Cup has long been a competition where smaller clubs can write their names into folklore, and HNK Segesta Sisak’s victory over NK Osijek immediately entered that conversation. Osijek, a side with established top-division experience and regular European ambitions, arrived as clear favourites. But Segesta were not intimidated by the reputation of their guests, pressing high, winning second balls and creating chances with impressive regularity.

The final score of 3-1 barely flattered the home side. Segesta controlled long stretches of the match and made the most of their opportunities at both ends of the game.

How the match unfolded

• Perfect home start: Segesta stunned Osijek by taking an early lead, converting after a defensive lapse inside the penalty area.
• Osijek equalise: The visitors briefly steadied themselves with an equaliser, using their superior technical quality to regain some control.
• Segesta answer before halftime: A well-delivered free kick caused chaos in the Osijek box, and a brave header restored the home side’s lead.
• A controlled second half: Rather than sitting back, Segesta continued to threaten on the counter and sealed the night with a third goal late in the second half.

Tactical story

HNK Segesta Sisak were organised, compact and remarkably confident in their pressing game. They allowed Osijek possession in less dangerous areas but snapped into tackles the moment the ball moved towards their defensive line. Offensively, Segesta targeted the space behind Osijek’s full-backs, using quick wide runners and direct forward passes to create one-on-one opportunities.

NK Osijek, by contrast, struggled to impose their usual rhythm. Their midfield saw plenty of the ball, but the final pass too often failed to find a teammate in a shooting position. The longer the match went on, the more frustrated Osijek became, and Segesta took full advantage of that growing tension with a disciplined, high-energy defensive display.

What the result means

For HNK Segesta Sisak, this is a result that will be remembered by supporters for a long time. Knocking out a club of Osijek’s calibre offers both a place in the next round and a significant moment of belief for everyone connected with the club.

For NK Osijek, the defeat is a major disappointment and an early reminder of how unforgiving cup football can be. Despite their league status and deeper squad, Osijek were second-best for too many key moments on the night. Credit to Segesta, they did exactly what was required to progress and now move forward with justifiable confidence in a competition they clearly value.