| Regionalliga Nordost 2021/2022 - Appearances as Assistant | ||||
| 01/08/2021 | ZFC Meuselwitz | - | BSG Chemie Leipzig | 1:2 |
| 17/12/2021 | Hertha BSC II | - | SV Tasmania Berlin | 5:3 |
| 07/05/2022 | BSG Chemie Leipzig | - | 1. FC Lok Leipzig | 2:1 |
| Regionalliga Nordost 2021/2022 - Appearances as Assistant | ||||
| 01/08/2021 | ZFC Meuselwitz | - | BSG Chemie Leipzig | 1:2 |
| 17/12/2021 | Hertha BSC II | - | SV Tasmania Berlin | 5:3 |
| 07/05/2022 | BSG Chemie Leipzig | - | 1. FC Lok Leipzig | 2:1 |
| Complete name: | Lasse Koslowski |
| Born: | 14/07/1987 |
| Place of birth: |
Berlin, 
Germany |
| Residence: | Berlin |
| Nationality: |
Germany |
| Profession: | selbständig |
| Club: | Frohnauer SC |