Olympiacos - Jagiellonia Bialystok

Olympiacos face a significant test of character as they open their Europa League campaign on 16 September 2026 at Karaiskakis Stadium. The hosts enter this matchday 1 clash looking to bounce back from a disappointing league defeat to OFI Crete, a result that interrupted their steady domestic progress. The challenge is compounded by the absence of key attacking threat Ayoub El Kaabi and the suspension of Konstantinos Fortounis, forcing the expected XI to rely on the creativity of Gelson Martins and Armando Gonzalez to unlock the visitors' defense.

Jagiellonia Bialystok arrive in Greece having navigated a demanding qualification path, including a hard-fought aggregate victory over Rangers. While their domestic form has fluctuated, highlighted by a recent loss to Wisla Krakow, their ability to find the net remains consistent. With Taras Romanczuk anchoring the midfield, the visitors will aim to exploit any lingering uncertainty in the Olympiacos ranks to secure a positive start in this opening contest.