Head to Head
| England U21 Premier League Cup | 2024/12/19 19:00 | Cardiff U21 v Watford U21 | W | 3-1 |
| England U21 Premier League Cup | 2024/10/17 17:00 | Watford U21 v Cardiff U21 | W | 0-2 |
| England Development League 2 | 2024/01/08 14:00 | Cardiff U21 v Watford U21 | D | 0-0 |
| England Development League 2 | 2023/10/24 12:00 | Watford U21 v Cardiff U21 | D | 2-2 |
| England Development League 2 | 2023/01/24 13:00 | Cardiff U21 v Watford U21 | L | 0-3 |
| England Development League 2 | 2022/10/18 12:00 | Watford U21 v Cardiff U21 | W | 0-1 |