| 2. Bundesliga 2021/2022 - Appearances as Referee |  |
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| 19/09/2021 | FC St. Pauli | - | FC Ingolstadt 04 | 4:1 | 1 | - | - |
| 05/02/2022 | Werder Bremen | - | Karlsruher SC | 2:1 | 2 | - | - |
| 29/04/2022 | Werder Bremen | - | Holstein Kiel | 2:3 | 6 | - | - |
| 2. Bundesliga 2021/2022 - Appearances as Referee | |
|
|
||||
| 19/09/2021 | FC St. Pauli | - | FC Ingolstadt 04 | 4:1 | 1 | - | - |
| 05/02/2022 | Werder Bremen | - | Karlsruher SC | 2:1 | 2 | - | - |
| 29/04/2022 | Werder Bremen | - | Holstein Kiel | 2:3 | 6 | - | - |
| 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: | 89 |