Stadion: Court 2 Round: 62 Ground: Clay
| ITF - M25 - Meerbusch | 2021/04/12 09:00 | Johann Lars v Christopher Patzanovsky | 6-4,4-6,10-8 |
| ITF - M25 - Trimbach | 2021/03/09 12:00 | Niklas Schell v Johann Lars | 6-3,6-4 |
| ITF - M25 - Trimbach | 2021/03/08 11:05 | Kaj Quirijns v Johann Lars | 3-6,6-7 |
| German Championship | 2020/12/09 15:30 | Johann Lars v Kai Wehnelt | 3-6,1-6 |
| German Championship | 2020/12/08 09:36 | Christian Hansen v Johann Lars | 3-6,3-6 |
| ITF - M15 - Forbach | 2020/09/28 07:00 | Johann Lars v Alexis Canter | 5-7,2-6 |
| ITF - M25 - Nussloch | 2020/01/19 09:00 | Johann Lars v Robin Lang | 0-6,2-6 |
| ITF - M15 - Sarreguemines | 2019/11/17 14:55 | Johann Lars v Alessandro Dragoni | 4-6,2-6 |
| ITF - M25 - Meerbusch | 2021/04/12 09:00 | Mats Hermans v Jurgen Briand | 6-3,2-6,11-9 |
| ITF - M15 - Antalya | 2021/04/04 06:30 | Marco Furlanetto v Mats Hermans | 6-1,6-0 |
| ITF - M25 - Trimbach | 2021/03/08 15:40 | Mats Hermans v Giovanni Agostinetto | 6-4,4-6,10-12 |
| Eastern European Championship | 2020/11/26 11:00 | Mats Hermans v Tuna Altuna | 3-6,1-6 |
| Eastern European Championship | 2020/11/25 15:45 | Nini Gabriel Dica v Mats Hermans | 3-6,6-3,6-4 |
| Eastern European Championship | 2020/11/24 17:10 | Tom Jomby v Mats Hermans | 6-1,6-0 |
| Eastern European Championship | 2020/11/23 12:50 | Luka Pavlovic v Mats Hermans | 6-1,6-4 |
| Eastern European Championship | 2020/11/20 10:30 | Mats Hermans v Filip Stipic | 6-3,6-4 |