| Youth Championship 2017/2018 - Appearances as Referee |  |
 |
 |
||||
| 27/05/2018 | FC Schalke 04 | - | Hertha BSC | 1:3 | 2 | - | - |
| Youth Championship 2017/2018 - Appearances as Referee | |
|
|
||||
| 27/05/2018 | FC Schalke 04 | - | Hertha BSC | 1:3 | 2 | - | - |
| Complete name: | Frank Willenborg |
| Born: | 10/02/1979 |
| Place of birth: |
Germany |
| Residence: | Osnabrück |
| Nationality: |
Germany |
| Profession: | Realschullehrer |
| Club: | SV Gehlenberg |
| Height: | 188 cm |
| Weight: | 82 kg |
| Bundesliga (GER) appearances: | 88 |