Because they compete across multiple sports, this guide breaks down their rivalry across both major disciplines, including their recent matchups in the 2025–26 UEFA Champions League and the EuroLeague . ⚽ Football: UEFA Champions League
: Barcelona won 6-1 against Olympiakos on October 21, 2025. Venue : Estadi Olímpic Lluís Companys in Barcelona. Olympiakos - Barcelona
: Midfielder Fermín López netted a hat-trick and Marcus Rashford scored a brace to spearhead Hansi Flick's offense. Ayoub El Kaabi scored the lone penalty for the Greek side after Santiago Hezze was sent off with a red card. Tactical Breakdown Because they compete across multiple sports, this guide
While they do not play each other regularly, their European ties are always massive spectacles. Recent Encounter Because they compete across multiple sports