SM
| Venue: Emirates Stadium |
Arsenal | ||
| G | 19 | Bernd Leno |
| CD-L | 18 | Nacho Monreal |
| CD-R | 20 | Shkodran Mustafi |
| LB | 31 | Sead Kolasinac |
| RB | 12 | Stephan Lichtsteiner S  |
| M | 14 | Pierre-Emerick Aubameyang |
| CM | 4 | Mohamed Elneny S |
| AM | 10 | Mesut Özil S |
| LM | 29 | Matteo Guendouzi |
| RM | 11 | Lucas Torreira |
| CF-R | 9 | Alexandre Lacazette |
| Sub | 25 | Carl Jenkinson |
| Sub | 17 | Alex Iwobi |
| Sub | 8 | Aaron Ramsey |
| Sub | 1 | Petr Cech |
| Sub | 34 | Granit Xhaka |
| Sub | 27 | Konstantinos Mavropanos |
| Sub | 49 | Edward Nketiah |
Cardiff City | ||
| G | 1 | Neil Etheridge |
| CD-L | 22 | Sol Bamba |
| CD-R | 5 | Bruno Ecuélé Manga |
| LB | 3 | Joe Bennett |
| RB | 2 | Lee Peltier |
| CM-L | 17 | Aron Gunnarsson |
| CM-R | 7 | Harry Arter S |
| LM | 8 | Joe Ralls |
| RM | 13 | Callum Paterson |
| F | 29 | Oumar Niasse S |
| RCF | 14 | Bobby Reid S |
| Sub | 23 | Kadeem Harris |
| Sub | 10 | Kenneth Zohore |
| Sub | 19 | Nathaniel Mendez-Laing |
| Sub | 12 | Alex Smithies |
| Sub | 33 | Junior Hoilett |
| Sub | 18 | Gregory Cunningham |
| Sub | 32 | Rhys Healey |
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