| U21 EURO 2021 Ungarn/Slowenien - Appearances as Referee |  |
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| 27/03/2021 | Spain | - | Italy | 0:0 | 8 | 2 | 1 |
| 31/03/2021 | Croatia | - | England | 1:2 | 7 | 1 | - |
| U21 EURO 2021 Ungarn/Slowenien - Appearances as Referee | |
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| 27/03/2021 | Spain | - | Italy | 0:0 | 8 | 2 | 1 |
| 31/03/2021 | Croatia | - | England | 1:2 | 7 | 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: | 122 |