| Cardiff City | Southampton |
|---|
| GK | Neil Etheridge | | GK | Alex McCarthy |
| DR | Joe Bennett | | DR | Matt Targett |
| DR | Callum Paterson | S1 | DR | Yan Valery |
| DR | Sean Morrison | | DR | Jannik Vestergaard |
| DR | Bruno Ecuele Manga | | DR | Jan Bednarek |
| DR | Sol Bamba | S3 | MD | Oriol Romeu |
| S3 | MD | Harry Arter | | MD | Stuart Armstrong |
| MD | Aron Gunnarsson | | MD | Mario Lemina |
| MD | Victor Camarasa | | MD | Pierre-Emile Hojbjerg |
| S1 | WR | Nathaniel Mendez-Laing | | AM | Nathan Redmond |
| S2 | WR | Josh Murphy | S2 | FD | Charlie Austin |
| Substitute | Substitute |
|---|
| S1 | AM | Junior Hoilett | S1 | DR | Jack Stephens |
| S2 | AM | Kadeem Harris | S2 | FD | Manolo Gabbiadini |
| S3 | MD | Joe Ralls | S3 | MD | James Ward-Prowse |
| Manager | Manager |
|---|
| | Neil Warnock | | | Ralph Hasenhuttl |