| Youth B Bundesliga West 2015/2016 - Appearances as Referee |  |
 |
 |
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| 30/08/2015 | Rot-Weiß Oberhausen | - | Borussia Dortmund | 0:7 | 3 | - | - |
| 08/11/2015 | VfL Bochum | - | Rot-Weiss Essen | 1:1 | 3 | 1 | 1 |
| Youth B Bundesliga West 2015/2016 - Appearances as Referee | |
|
|
||||
| 30/08/2015 | Rot-Weiß Oberhausen | - | Borussia Dortmund | 0:7 | 3 | - | - |
| 08/11/2015 | VfL Bochum | - | Rot-Weiss Essen | 1:1 | 3 | 1 | 1 |
| Complete name: | David Markus Koj |
| Born: | 26/09/1993 |
| Place of birth: |
Germany |
| Residence: | Wegberg |
| Nationality: |
Germany |
| Profession: | Beisitzer |
| Club: | Sportclub Wegberg 1912 |