| Regionalliga Nord 2008/2009 - Appearances as Referee |  |
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| 30/08/2008 | Hannover 96 II | - | Altona 93 | 0:2 | 2 | - | - |
| 07/12/2008 | FC Oberneuland | - | 1. FC Magdeburg | 1:2 | 6 | - | - |
| 25/04/2009 | VfL Wolfsburg II | - | Türkiyemspor Berlin | 3:1 | 4 | - | - |
| Regionalliga Nord 2008/2009 - Appearances as Referee | |
|
|
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| 30/08/2008 | Hannover 96 II | - | Altona 93 | 0:2 | 2 | - | - |
| 07/12/2008 | FC Oberneuland | - | 1. FC Magdeburg | 1:2 | 6 | - | - |
| 25/04/2009 | VfL Wolfsburg II | - | Türkiyemspor Berlin | 3:1 | 4 | - | - |
| Complete name: | Thorben Siewer |
| Born: | 05/07/1987 |
| Place of birth: |
Germany |
| Residence: | Drolshagen |
| Nationality: |
Germany |
| Profession: | Controller |
| Club: | FC Schreibershof |