| Oberliga Mittelrhein 2016/2017 - Appearances as Referee |  |
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| 23/10/2016 | Borussia Freialdenhoven | - | Viktoria Arnoldsweiler | 3:0 | 3 | - | - |
| Oberliga Mittelrhein 2016/2017 - Appearances as Referee | |
|
|
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| 23/10/2016 | Borussia Freialdenhoven | - | Viktoria Arnoldsweiler | 3:0 | 3 | - | - |
| Complete name: | David Markus Koj |
| Born: | 26/09/1993 |
| Place of birth: |
Germany |
| Residence: | Wegberg |
| Nationality: |
Germany |
| Profession: | Beisitzer |
| Club: | Sportclub Wegberg 1912 |