Stadium: Court 1 Round: 54 Ground: Carpet indoor
| ITF Germany F14 | 2018/10/03 14:20 | Justin Schlageter v Christian Seraphim | 1-6,6-7 |
| Challenger Pullach Qual | 2018/08/04 13:10 | Justin Schlageter v Fabrizio Ornago | 4-6,6-7 |
| ITF Croatia F2 | 2018/03/10 09:00 | Karlo Kajin v Justin Schlageter | 3-6,6-2,6-4 |
| ITF Germany F14 | 2017/10/11 13:10 | Justin Schlageter v Marc-Andrea Huesler | 1-6,1-6 |
| ITF Germany F3 | 2017/01/22 11:30 | Justin Schlageter v Dominik Recek | 4-6,1-6 |
| ITF Germany F17 | 2016/11/03 10:00 | Justin Schlageter v Hubert Hurkacz | 4-6,0-6 |
| ITF Germany F17 | 2016/11/02 10:00 | Justin Schlageter v Patrick Mayer | 6-4,5-7,7-5 |
| ITF Germany F15 | 2015/10/05 10:00 | Justin Schlageter v Nils Brinkmann | 3-6,1-6 |
| ITF M15 Forbach | 2019/09/25 16:35 | Hugo Schott v Lasse Muscheites | 6-2,6-1 |
| ITF M15 Forbach | 2019/09/23 15:35 | Lasse Muscheites v Julien De Cuyper | 7-6,6-1 |
| ITF M15 Forbach | 2019/09/23 10:00 | Lasse Muscheites v Quentin Marchal | 6-0,6-0 |
| ITF M15 Antalya | 2019/09/17 07:00 | Lasse Muscheites v Christopher Patzanovsky | 4-6,7-5,8-10 |
| ITF M15 Antalya | 2019/09/16 07:30 | Lasse Muscheites v Michal Marko | 6-3,6-4 |
| ITF M15 Haren | 2019/08/28 09:00 | David Pichler v Lasse Muscheites | 7-6,6-2 |
| ITF M15 Haren | 2019/08/27 09:00 | Jim Walder v Lasse Muscheites | 3-6,5-7 |
| ITF M15 Lambermont | 2019/08/21 12:05 | Nicolas Demeroutis v Lasse Muscheites | 6-3,6-4 |