| Europa League Qual. 2023/2024 - Appearances as Referee |  |
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| 31/08/2023 | FC Lugano | - | Union Saint-Gilloise | 0:1 | 3 | - | 1 |
| Europa League Qual. 2023/2024 - Appearances as Referee | |
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| 31/08/2023 | FC Lugano | - | Union Saint-Gilloise | 0:1 | 3 | - | 1 |
| Complete name: | Harm Osmers |
| Born: | 28/01/1985 |
| Place of birth: |
Germany |
| Residence: | Hannover |
| Nationality: |
Germany |
| Profession: | Investitionscontroller |
| Club: | SV Baden |
| Height: | 189 cm |
| Weight: | 81 kg |
| Bundesliga (GER) appearances: | 123 |