Face à face
| England U23 Development League | 2020/03/02 13:00 | Cardiff City v Watford | L | 3-1 |
| England U23 Development League | 2019/12/09 13:00 | Watford v Cardiff City | D | 1-1 |
| England U23 Development League | 2019/03/29 15:01 | Watford v Cardiff City | D | 0-0 |
| England U23 Development League | 2018/11/19 19:00 | Cardiff City v Watford | L | 2-0 |
| Coupe Premier League U23 | 2018/03/31 13:00 | Watford v Cardiff City | L | 0-4 |
| Coupe Premier League U23 | 2018/02/01 13:16 | Cardiff City v Watford | D | 1-1 |
| England U23 Development League | 2018/01/15 13:00 | Watford v Cardiff City | W | 1-0 |
| England U23 Development League | 2017/10/23 17:59 | Cardiff City v Watford | L | 2-0 |
Home History
| England U23 Development League | 2020/12/01 13:00 | Ipswich Town v Watford | L | 3-0 |
| England U23 Development League | 2020/11/06 13:00 | Watford v Sheff Utd | L | 0-3 |
| England U23 Development League | 2020/10/30 14:00 | Birmingham v Watford | W | 2-3 |
| England U23 Development League | 2020/10/23 12:00 | Watford v Coventry City Reserve | L | 0-3 |
| England U23 Development League | 2020/10/19 18:00 | Nottingham Forest v Watford | L | 4-0 |
| England U23 Development League | 2020/10/02 13:00 | Watford v Bristol City | L | 0-4 |
| England U23 Development League | 2020/09/28 13:00 | Charlton Athletic v Watford | W | 2-3 |
| England U23 Development League | 2020/09/21 12:00 | Millwall v Watford | D | 2-2 |
Away History
| England U23 Development League | 2020/11/28 11:00 | Colchester v Cardiff City | L | 2-0 |
| England U23 Development League | 2020/11/25 11:00 | Millwall v Cardiff City | L | 2-0 |
| England U23 Development League | 2020/11/01 13:30 | Crewe Alexandra v Cardiff City | L | 1-0 |
| England U23 Development League | 2020/10/27 13:00 | Cardiff City v Hull City | W | 2-0 |
| England U23 Development League | 2020/10/20 13:00 | Sheffield v Cardiff City | L | 1-0 |
| England U23 Development League | 2020/10/06 12:00 | Ipswich Town v Cardiff City | L | 2-1 |
| England U23 Development League | 2020/09/22 12:00 | Cardiff City v Bristol City | L | 1-2 |
| England U23 Development League | 2020/09/14 12:00 | Swansea City U21 v Cardiff City | L | 5-1 |
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