| Regionalliga West 2014/2015 - Appearances as Assistant | ||||
| 01/08/2014 | Rot-Weiss Essen | - | Sportfreunde Lotte | 1:1 |
| 02/11/2014 | Sportfreunde Siegen | - | 1. FC Köln II | 1:0 |
| 17/05/2015 | Bor. Mönchengladbach II | - | KFC Uerdingen 05 | 4:0 |
| Regionalliga West 2014/2015 - Appearances as Assistant | ||||
| 01/08/2014 | Rot-Weiss Essen | - | Sportfreunde Lotte | 1:1 |
| 02/11/2014 | Sportfreunde Siegen | - | 1. FC Köln II | 1:0 |
| 17/05/2015 | Bor. Mönchengladbach II | - | KFC Uerdingen 05 | 4:0 |
| Complete name: | Thorben Siewer |
| Born: | 05/07/1987 |
| Place of birth: |
Germany |
| Residence: | Drolshagen |
| Nationality: |
Germany |
| Profession: | Controller |
| Club: | FC Schreibershof |