| Europa League Qual. 2024/2025 - Appearances as Assistant | ||||
| 25/07/2024 | MFK Ružomberok | - | Trabzonspor | 0:2 |
| 22/08/2024 | Viktoria Plzeň | - | Heart of Midlothian | 1:0 |
| Europa League Qual. 2024/2025 - Appearances as Assistant | ||||
| 25/07/2024 | MFK Ružomberok | - | Trabzonspor | 0:2 |
| 22/08/2024 | Viktoria Plzeň | - | Heart of Midlothian | 1:0 |
| Complete name: | Lasse Koslowski |
| Born: | 14/07/1987 |
| Place of birth: |
Berlin, 
Germany |
| Residence: | Berlin |
| Nationality: |
Germany |
| Profession: | selbständig |
| Club: | Frohnauer SC |