Olympiakos and Jagiellonia Białystok have never previously faced in any European competition. Olympiakos' last meeting with a Polish side was in the 1987-88 European Cup first round, when they lost 3-2 on aggregate to Górnik Zabrze.

Jagiellonia Białystok's only previous meeting with a Greek team came in the 2010-11 UEFA Europa League qualifying phase, when they lost 4-3 on aggregate to Aris (1-2 home, 2-2 away).

Olympiakos haven't won their first match in a major European campaign since 2021-22, when they beat Royal Antwerp 2-1; they are winless in four since then (D1 L3).

Jagiellonia Białystok are competing in their third major European campaign, having previously reached the quarter-final of the 2024-25 Conference League and then the play-offs of the same competition the following season.

Olympiakos will be without striker Ayoub El Kaabi for this game, who is the club’s all-time top scorer in major European competition (23 goals in 33 appearances). Since the start of the 2023-24 season, El Kaabi has netted 45% of the Greek side’s goals in major European matches (23/51).