| German Championship | 2021/12/09 11:30 | Marko Topo v Edison Ambarzumjan | 6-2,7-6 |
| German Championship | 2021/12/08 11:00 | Marko Topo v Dornbusch, Michel | 6-3,2-6,6-6 |
| ITF - M15 Monastir | 2021/11/24 09:50 | Marko Topo v Maxime Dubouch | 6-3,2-6,6-4 |
| Challenger Banja Luka | 2021/09/10 16:00 | Marko Topo v Tomas Martin Etcheverry | 3-6,6-7 |
| Challenger Banja Luka | 2021/09/09 11:55 | Marko Topo v Vitaliy Sachko | 6-1,3-6,7-6 |
| Challenger Banja Luka | 2021/09/07 14:30 | Petrovic, Danilo v Marko Topo | 6-4,6-7,2-6 |
| ITF M15 Allershausen | 2021/09/01 14:35 | Marko Topo v Tim Handel | 5-7,5-7 |
| ITF M15 Bad Waltersdorf | 2021/08/26 07:00 | Marko Topo v Gabriel Decamps | 4-6,5-7 |
| German Championship | 2021/12/09 10:00 | Weindl, Michael v Kai Wehnelt | 3-6,1-6 |
| German Championship | 2021/12/08 13:00 | Jannik Maute v Kai Wehnelt | 2-6,4-6 |
| ITF - M15 Héraklion | 2021/12/03 08:00 | Kai Wehnelt v Charles Broom | 4-6,2-6 |
| ITF - M15 Héraklion | 2021/12/02 07:00 | Kai Wehnelt v Pijus Vaitiekunas | 6-1,6-2 |
| ITF - M15 Héraklion | 2021/12/01 07:00 | Kai Wehnelt v Kim, Dong Ju | 6-4,7-6 |
| ITF - M15 Héraklion | 2021/11/27 08:00 | Nicholas David Ionel v Kai Wehnelt | 7-6,6-3 |
| ITF - M15 Héraklion | 2021/11/26 12:05 | Kai Wehnelt v Arthur Fery | 6-3,7-5 |
| ITF - M15 Héraklion | 2021/11/25 07:30 | Kai Wehnelt v Ktiri, Marc Othman | 6-1,6-4 |