| 2. Bundesliga 2019/2020 - Appearances as Assistant | ||||
| 17/05/2020 | FC St. Pauli | - | 1. FC Nürnberg | 1:0 |
| 2. Bundesliga 2019/2020 - Appearances as Assistant | ||||
| 17/05/2020 | FC St. Pauli | - | 1. FC Nürnberg | 1:0 |
| Complete name: | Lasse Koslowski |
| Born: | 14/07/1987 |
| Place of birth: |
Berlin, 
Germany |
| Residence: | Berlin |
| Nationality: |
Germany |
| Profession: | selbständig |
| Club: | Frohnauer SC |