| FA Cup | M. | W | D | L | goals | |||
| at home | 1 | 1 | 0 | 0 | 4 | : | 1 | |
| Away | 1 | 1 | 0 | 0 | 1 | : | 0 | |
| ∑ | 2 | 2 | 0 | 0 | 5 | : | 1 | |
| League Cup | M. | W | D | L | goals | |||
| at home | 2 | 2 | 0 | 0 | 4 | : | 0 | |
| Away | 1 | 0 | 1 | 0 | 1 | : | 1 | |
| ∑ | 3 | 2 | 1 | 0 | 5 | : | 1 | |
| overall | M. | W | D | L | goals | |||
| at home | 3 | 3 | 0 | 0 | 8 | : | 1 | |
| Away | 2 | 1 | 1 | 0 | 2 | : | 1 | |
| Neutral Place | 0 | 0 | 0 | 0 | 0 | : | 0 | |
| ∑ | 5 | 4 | 1 | 0 | 10 | : | 2 | |
| FA Cup | |||||
| 1996/1997 | 1. Round | Northampton Town | - | Watford FC | 0:1 (0:0) |
| 1938/1939 | 1. Round | Watford FC | - | Northampton Town | 4:1 |
| League Cup | |||||
| 1975/1976 | 1. Round | Northampton Town | - | Watford FC | 1:1 |
| 1975/1976 | 1. Round | Watford FC | - | Northampton Town | 2:0 |
| 1971/1972 | 1. Round | Watford FC | - | Northampton Town | 2:0 |
|
For games that were decided on penalties the score after 120 minutes will be included in the ranking |
England 
![Watford FC [U18]](https://s.hs-data.com/bilder/wappen/mini/29037.gif?fallback=png "Watford FC [U18]"){kind=small}
![Watford FC [Youth]](https://s.hs-data.com/bilder/wappen/mini/28044.gif?fallback=png "Watford FC [Youth]"){kind=small}
![Watford FC [Youth B]](https://s.hs-data.com/bilder/wappen/mini/27349.gif?fallback=png "Watford FC [Youth B]"){kind=small}
