| Youth B Bundesliga Nord/Nordost 2008/2009 - Appearances as Assistant | ||||
| 17/08/2008 | Hamburger SV | - | Hannover 96 | 0:1 |
| Youth B Bundesliga Nord/Nordost 2008/2009 - Appearances as Assistant | ||||
| 17/08/2008 | Hamburger SV | - | Hannover 96 | 0:1 |
| Complete name: | Lasse Koslowski |
| Born: | 14/07/1987 |
| Place of birth: |
Berlin, 
Germany |
| Residence: | Berlin |
| Nationality: |
Germany |
| Profession: | selbständig |
| Club: | Frohnauer SC |