| U19 Friendlies 2014 - Appearances as Referee |  |
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| 08/09/2014 | Germany | - | England | 1:1 | 1 | - | - |
| U19 Friendlies 2014 - Appearances as Referee | |
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| 08/09/2014 | Germany | - | England | 1:1 | 1 | - | - |
| 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 |