| Youth B Bundesliga West 2012/2013 - Appearances as Assistant | ||||
| 12/08/2012 | Alemannia Aachen | - | Bayer Leverkusen | 1:1 |
| Youth B Bundesliga West 2012/2013 - Appearances as Assistant | ||||
| 12/08/2012 | Alemannia Aachen | - | Bayer Leverkusen | 1:1 |
| Complete name: | Björn Maertens |
| Born: | 09/08/1989 |
| Place of birth: |
Germany |
| Residence: | Braunschweig |
| Nationality: |
Germany |
| Profession: | Student |
| Club: | VfL Bienrode |
| Height: | 176 cm |