| Oberliga Mittelrhein 2021/2022 - Appearances as Assistant | ||||
| 10/10/2021 | SV Breinig | - | Blau-Weiß Friesdorf | 2:3 |
| 17/10/2021 | Borussia Freialdenhoven | - | FC Pesch 1956 | 0:1 |
| 15/05/2022 | BC Viktoria Glesch-Paffendorf | - | SV 1914 Eilendorf | 2:0 |
| Oberliga Mittelrhein 2021/2022 - Appearances as Assistant | ||||
| 10/10/2021 | SV Breinig | - | Blau-Weiß Friesdorf | 2:3 |
| 17/10/2021 | Borussia Freialdenhoven | - | FC Pesch 1956 | 0:1 |
| 15/05/2022 | BC Viktoria Glesch-Paffendorf | - | SV 1914 Eilendorf | 2:0 |
| Complete name: | David Markus Koj |
| Born: | 26/09/1993 |
| Place of birth: |
Germany |
| Residence: | Wegberg |
| Nationality: |
Germany |
| Profession: | Beisitzer |
| Club: | SC Wegberg 1912 |