| Youth B Bundesliga Nord/Nordost 2014/2015 - Appearances as Assistant | ||||
| 12/04/2015 | Werder Bremen | - | Hertha BSC | 5:2 |
| 02/05/2015 | Hannover 96 | - | VfL Wolfsburg | 1:3 |
| Youth B Bundesliga Nord/Nordost 2014/2015 - Appearances as Assistant | ||||
| 12/04/2015 | Werder Bremen | - | Hertha BSC | 5:2 |
| 02/05/2015 | Hannover 96 | - | VfL Wolfsburg | 1:3 |
| Complete name: | Alexander Sieker |
| Born: | |
| Place of birth: |
Germany |
| Residence: | Rinteln |
| Nationality: |
Germany |