| Youth B Bundesliga West 2009/2010 - Appearances as Assistant | ||||
| 03/10/2009 | Arminia Bielefeld | - | Bonner SC | 0:0 |
| 01/05/2010 | Arminia Bielefeld | - | Bor. Mönchengladbach | 0:4 |
| Youth B Bundesliga West 2009/2010 - Appearances as Assistant | ||||
| 03/10/2009 | Arminia Bielefeld | - | Bonner SC | 0:0 |
| 01/05/2010 | Arminia Bielefeld | - | Bor. Mönchengladbach | 0:4 |
| Complete name: | Björn Maertens |
| Born: | 09/08/1989 |
| Place of birth: |
Germany |
| Residence: | Braunschweig |
| Nationality: |
Germany |
| Profession: | Student |
| Club: | VfL Bienrode |
| Height: | 176 cm |