Match events
Minute by minute- 19' Yellow card: Youssef El Arabi Olympiacos
- 26' Yellow card: Rúben Semedo Olympiacos
- Half-time 0–0
- 50' Yellow card: Andreas Bouchalakis Olympiacos
- 58' Substitution: Dani CeballosOff: Gabriel Martinelli Arsenal
- 65' Substitution: Kostas FortounisOff: Andreas Bouchalakis Olympiacos
- 71' Yellow card: Shkodran Mustafi Arsenal
- 75' Substitution: Nicolas PépéOff: Joe Willock Arsenal
- 75' Substitution: Maximiliano LoveraOff: Georgios Masouras Olympiacos
- 81'0–1 Goal: Alexandre LacazetteAssist: Bukayo Saka Arsenal
- 83' Yellow card: Granit Xhaka Arsenal
- 90+1' Yellow card: Ousseynou Ba Olympiacos
- 90+2' Substitution: Ainsley Maitland-NilesOff: Sokratis Papastathopoulos Arsenal
Line-ups
Confirmed
Olympiacos4-3-34-2-3-1Arsenal
- 1 Sá
- 21 Tsimikas
- 24 Ba
- 3 Semedo
- 14 Elabdellaoui
- 4 Camara
- 8 Guilherme
- 565' Bouchalakis
- 28 Valbuena
- 11 El Arabi
- 1975' Masouras
- 1 Leno
- 77A Saka
- 23 Luiz
- 20 Mustafi
- 590+2' Papastathopoulos
- 34 Xhaka
- 29 Guendouzi
- 3558' Martinelli
- 2875' Willock
- 14 Aubameyang
- 9 Lacazette
Olympiacos bench
- 7Kostas Fortounis65'
- 22Maximiliano Lovera75'
Arsenal bench
- 19Nicolas Pépé75'
- 15Ainsley Maitland-Niles90+2'
- 8Dani Ceballos58'