| Aufstiegsrunde 3. Liga 2018/2019 - Appearances as Referee |  |
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| 22/05/2019 | VfL Wolfsburg II | - | Bayern München II | 3:1 | 4 | - | - |
| Aufstiegsrunde 3. Liga 2018/2019 - Appearances as Referee | |
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| 22/05/2019 | VfL Wolfsburg II | - | Bayern München II | 3:1 | 4 | - | - |
| Complete name: | Thorben Siewer |
| Born: | 05/07/1987 |
| Place of birth: |
Germany |
| Residence: | Drolshagen |
| Nationality: |
Germany |
| Profession: | Controller |
| Club: | FC Schreibershof |