| DFB-Pokal 2024/2025 - Appearances as Assistant | ||||
| 30/10/2024 | SC Paderborn 07 | - | Werder Bremen | 0:1 |
| 04/12/2024 | RB Leipzig | - | Eintracht Frankfurt | 3:0 |
| 02/04/2025 | VfB Stuttgart | - | RB Leipzig | 3:1 |
| DFB-Pokal 2024/2025 - Appearances as Assistant | ||||
| 30/10/2024 | SC Paderborn 07 | - | Werder Bremen | 0:1 |
| 04/12/2024 | RB Leipzig | - | Eintracht Frankfurt | 3:0 |
| 02/04/2025 | VfB Stuttgart | - | RB Leipzig | 3:1 |
| Complete name: | Lasse Koslowski |
| Born: | 14/07/1987 |
| Place of birth: |
Berlin, 
Germany |
| Residence: | Berlin |
| Nationality: |
Germany |
| Profession: | selbständig |
| Club: | Frohnauer SC |