| Regionalliga West 2008/2009 - Appearances as Assistant | ||||
| 18/09/2008 | 1. FC Köln II | - | Rot-Weiss Essen | 0:2 |
| Regionalliga West 2008/2009 - Appearances as Assistant | ||||
| 18/09/2008 | 1. FC Köln II | - | Rot-Weiss Essen | 0:2 |
| Complete name: | Thorben Siewer |
| Born: | 05/07/1987 |
| Place of birth: |
Germany |
| Residence: | Drolshagen |
| Nationality: |
Germany |
| Profession: | Controller |
| Club: | FC Schreibershof |