| Regionalliga West 2017/2018 - Appearances as Assistant | ||||
| 25/10/2017 | 1. FC Köln II | - | Wuppertaler SV | 6:3 |
| Regionalliga West 2017/2018 - Appearances as Assistant | ||||
| 25/10/2017 | 1. FC Köln II | - | Wuppertaler SV | 6:3 |
| Complete name: | Thorben Siewer |
| Born: | 05/07/1987 |
| Place of birth: |
Germany |
| Residence: | Drolshagen |
| Nationality: |
Germany |
| Profession: | Controller |
| Club: | FC Schreibershof |