| Professional Development League | - | 2024-05-08 02:00 | Colchester United U21 | | Watford U21 | |
| Professional Development League | - | 2024-05-03 21:00 | Watford U21 | 2-2 | Burnley U21 | 1-1 |
| Professional Development League | - | 2024-04-29 20:00 | Wigan Athletic U21 | 1-3 | Watford U21 | 0-2 |
| Professional Development League | - | 2024-04-23 20:00 | Watford U21 | 1-0 | Coventry City U21 | 1-0 |
| Professional Development League | - | 2024-04-15 21:00 | Sheffield United U21 | 5-0 | Watford U21 | 3-0 |
| Professional Development League | - | 2024-04-08 21:00 | Watford U21 | 0-1 | Hull City U21 | 0-0 |
| Professional Development League | - | 2024-04-02 21:00 | Watford U21 | 0-5 | Swansea City U21 | 0-2 |
| Professional Development League | - | 2024-03-26 21:00 | Barnsley U21 | 1-2 | Watford U21 | 0-1 |
| Professional Development League | - | 2024-03-19 21:00 | Watford U21 | 1-3 | Bristol City U21 | 0-1 |
| Professional Development League | - | 2024-03-15 21:00 | Watford U21 | 5-3 | Ipswich Town U21 | 0-3 |
| Professional Development League | - | 2024-03-11 22:00 | Millwall U21 | 7-0 | Watford U21 | 5-0 |
| Professional Development League | - | 2024-02-26 21:30 | Charlton Athletic U21 | 2-3 | Watford U21 | 1-1 |
| Professional Development League | - | 2024-02-20 21:00 | Watford U21 | 2-2 | AFC Bournemouth U21 | 0-2 |
| Professional Development League | - | 2024-02-14 03:00 | Queens Park Rangers U21 | 0-1 | Watford U21 | 0-1 |
| Professional Development League | - | 2024-01-23 21:00 | Watford U21 | 2-0 | Charlton Athletic U21 | 1-0 |
| Professional Development League | - | 2024-01-08 22:00 | Cardiff City U21 | 0-0 | Watford U21 | 0-0 |
| Professional Development League | - | 2023-12-11 21:00 | Watford U21 | 1-3 | Millwall U21 | 1-2 |
| Professional Development League | - | 2023-11-30 21:00 | AFC Bournemouth U21 | 2-1 | Watford U21 | 0-1 |
| Professional Development League | - | 2023-11-07 21:00 | Watford U21 | 1-4 | Queens Park Rangers U21 | 1-2 |
| Professional Development League | - | 2023-10-31 21:00 | Bristol City U21 | 2-2 | Watford U21 | 1-2 |
| Professional Development League | - | 2023-10-24 20:00 | Watford U21 | 2-2 | Cardiff City U21 | 0-2 |
| Professional Development League | - | 2023-10-17 20:30 | Ipswich Town U21 | 4-1 | Watford U21 | 1-0 |
| Professional Development League | - | 2023-10-02 19:00 | Swansea City U21 | 4-4 | Watford U21 | 3-1 |
| Professional Development League | - | 2023-09-26 20:00 | Watford U21 | 2-1 | Colchester United U21 | 2-0 |
| Professional Development League | - | 2023-09-11 21:00 | Crewe Alexandra U21 | 0-1 | Watford U21 | 0-1 |
| Professional Development League | - | 2023-09-01 21:00 | Watford U21 | 4-3 | Peterborough United U21 | 1-1 |
| Professional Development League | - | 2023-08-25 19:00 | Sheffield Wednesday U21 | 3-1 | Watford U21 | 3-0 |
| Professional Development League | - | 2023-08-18 21:00 | Watford U21 | 1-3 | Fleetwood Town U21 | 1-1 |
| Professional Development League | - | 2023-08-14 21:00 | Birmingham City U21 | 1-1 | Watford U21 | 0-0 |
| Professional Development League | - | 2023-05-09 20:00 | Watford U21 | 2-3 | Burnley U21 | 1-2 |
| Professional Development League | - | 2023-05-01 21:00 | Coventry City U21 | 3-0 | Watford U21 | 2-0 |
| Professional Development League | - | 2023-04-24 20:00 | Watford U21 | 1-1 | Sheffield Wednesday U21 | 0-1 |
| Professional Development League | - | 2023-04-18 02:00 | Birmingham City U21 | 1-3 | Watford U21 | 0-1 |
| Professional Development League | - | 2023-04-14 20:00 | Watford U21 | 0-2 | Ipswich Town U21 | 0-1 |
| Professional Development League | - | 2023-04-07 20:00 | Watford U21 | 0-2 | Barnsley U21 | 0-0 |
| Professional Development League | - | 2023-03-31 20:00 | Watford U21 | 7-0 | Peterborough United U21 | 2-0 |
| Professional Development League | - | 2023-03-24 19:30 | Colchester United U21 | 1-2 | Watford U21 | 0-2 |
| Professional Development League | - | 2023-03-20 21:00 | Watford U21 | 1-0 | Queens Park Rangers U21 | 1-0 |
| Professional Development League | - | 2023-03-14 21:00 | Watford U21 | 1-1 | Reading U21 | 0-0 |
| Professional Development League | - | 2023-02-28 21:30 | Watford U21 | 1-2 | Bristol City U21 | 1-0 |
| Professional Development League | - | 2023-02-24 21:00 | Watford U21 | 2-3 | Swansea City U21 | 0-2 |
| Professional Development League | - | 2023-02-20 21:00 | Charlton Athletic U21 | 6-1 | Watford U21 | 2-0 |
| Professional Development League | - | 2023-02-14 21:30 | Millwall U21 | 1-1 | Watford U21 | 1-1 |
| Professional Development League | - | 2023-02-07 21:00 | Watford U21 | 1-2 | Crewe Alexandra U21 | 0-1 |
| Professional Development League | - | 2023-01-24 21:00 | Cardiff City U21 | 0-3 | Watford U21 | 0-0 |
| 英超杯 | - | 2022-12-20 21:30 | Watford U21 | 3-1 | Middlesbrough U21 | 0-0 |
| 英超杯 | - | 2022-12-10 03:00 | Huddersfield Town U21 | 2-2 | Watford U21 | 1-0 |
| 英超杯 | - | 2022-11-25 21:00 | Watford U21 | 4-3 | 西布朗U21 | 3-1 |
| 英超杯 | - | 2022-11-19 19:00 | Middlesbrough U21 | 4-0 | Watford U21 | 3-0 |
| Professional Development League | - | 2022-11-08 21:00 | Bristol City U21 | 5-0 | Watford U21 | 3-0 |
| Professional Development League | - | 2022-11-01 21:30 | Watford U21 | 0-6 | Colchester United U21 | 0-4 |
| Professional Development League | - | 2022-10-28 21:00 | Swansea City U21 | 4-0 | Watford U21 | 2-0 |
| Professional Development League | - | 2022-10-25 02:00 | Queens Park Rangers U21 | 2-4 | Watford U21 | 1-1 |
| Professional Development League | - | 2022-10-18 20:00 | Watford U21 | 0-1 | Cardiff City U21 | 0-0 |
| Professional Development League | - | 2022-10-10 21:00 | Reading U21 | 1-0 | Watford U21 | 1-0 |
| 英超杯 | - | 2022-10-04 20:00 | Watford U21 | 1-2 | Huddersfield Town U21 | 0-1 |
| Professional Development League | - | 2022-09-30 20:00 | Ipswich Town U21 | 1-0 | Watford U21 | 0-0 |
| Professional Development League | - | 2022-09-27 22:00 | Watford U21 | 0-2 | Charlton Athletic U21 | 0-0 |
| Professional Development League | - | 2022-09-13 20:00 | Watford U21 | 1-4 | Millwall U21 | 1-2 |
| Professional Development League | - | 2022-09-07 00:00 | Sheffield United U21 | 2-0 | Watford U21 | 1-0 |
| 英超杯 | - | 2022-09-01 20:00 | 西布朗U21 | 4-0 | Watford U21 | 2-0 |
| Professional Development League | - | 2022-08-23 02:00 | Hull City U21 | 5-0 | Watford U21 | 2-0 |
| Professional Development League | - | 2022-08-10 20:00 | Wigan Athletic U21 | 5-0 | Watford U21 | |
