| Europa League | M. | W | D | L | goals | |||
| at home | 1 | 1 | 0 | 0 | 3 | : | 0 | |
| Away | 1 | 0 | 0 | 1 | 1 | : | 3 | |
| ∑ | 2 | 1 | 0 | 1 | 4 | : | 3 | |
| overall | M. | W | D | L | goals | |||
| at home | 1 | 1 | 0 | 0 | 3 | : | 0 | |
| Away | 1 | 0 | 0 | 1 | 1 | : | 3 | |
| Neutral Place | 0 | 0 | 0 | 0 | 0 | : | 0 | |
| ∑ | 2 | 1 | 0 | 1 | 4 | : | 3 | |
| Europa League | |||||
| 1983/1984 | 1. Round | Watford FC | - | 1. FC Kaiserslautern | 3:0 (2:0) |
| 1983/1984 | 1. Round | 1. FC Kaiserslautern | - | Watford FC | 3:1 (1:1) |
|
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}
