| Watford | Cardiff City |
|---|
| GK | Ben Foster | | GK | Neil Etheridge |
| DR | Jose Holebas | S2 | DR | Joe Bennett |
| DR | Kiko Femenia | | DR | Callum Paterson |
| DR | Craig Cathcart | | DR | Sean Morrison |
| DR | Christian Kabasele | | DR | Bruno Ecuele Manga |
| S1 | MD | Ken Sema | | DR | Sol Bamba |
| MD | Abdoulaye Doucoure | | MD | Harry Arter |
| MD | Domingos Quina | S3 | MD | Aron Gunnarsson |
| AM | Roberto Pereyra | | MD | Victor Camarasa |
| S3 | FD | Gerard Deulofeu | | AM | Junior Hoilett |
| S2 | FD | Troy Deeney | S1 | WR | Josh Murphy |
| Substitute | Substitute |
|---|
| S1 | FD | Isaac Success | S1 | WR | Nathaniel Mendez-Laing |
| S2 | FD | Stefano Okaka | S2 | DR | Lee Peltier |
| S3 | MD | Tom Cleverley | S3 | MD | Bobby Reid |
| Manager | Manager |
|---|
| | Javi Gracia | | | Neil Warnock |