| Challenger Ochsenhausen | 2021/04/20 10:20 | Dennis Klein v Jiri Martinko | W | 1-3 |
| Challenger Ochsenhausen | 2021/04/09 13:30 | Jiri Martinko v Dennis Klein | W | 3-0 |
| Challenger Ochsenhausen | 2021/04/07 13:10 | Jiri Martinko v Dennis Klein | L | 2-3 |
| Challenger Ochsenhausen | 2021/02/26 12:25 | Jiri Martinko v Dennis Klein | L | 2-3 |
| Challenger Ochsenhausen | 2021/02/24 08:50 | Dennis Klein v Jiri Martinko | W | 1-3 |
| Challenger Ochsenhausen | 2021/02/22 21:00 | Dennis Klein v Jiri Martinko | W | 1-3 |
| Challenger Ochsenhausen | 2021/02/15 17:00 | Jiri Martinko v Dennis Klein | L | 2-3 |
| Challenger Ochsenhausen | 2021/02/08 17:00 | Jiri Martinko v Dennis Klein | L | 1-3 |
| Challenger Ochsenhausen | 2021/07/26 08:30 | Fedor Kuzmin v Jiri Martinko | W | 1-3 |
| TT Star Series | 2021/07/23 13:37 | Jiri Martinko v Tomas Tregler | L | 0-3 |
| TT Star Series | 2021/07/23 12:45 | Jiri Vrablik v Jiri Martinko | L | 3-1 |
| TT Star Series | 2021/07/23 10:45 | Jiri Martinko v Miroslav Horejsi | L | 1-3 |
| TT Star Series | 2021/07/23 09:15 | Jiri Martinko v Josef Braun | W | 3-0 |
| TT Star Series | 2021/07/23 07:45 | Jiri Martinko v Jakub Zelinka | W | 3-2 |
| TT Star Series | 2021/07/22 10:15 | Oleksandr Tymofieiev v Jiri Martinko | W | 1-3 |
| TT Star Series | 2021/07/22 08:45 | Jiri Martinko v Tomas Tregler | L | 2-3 |
| Challenger Ochsenhausen | 2021/07/26 06:30 | Florian Bluhm v Dennis Klein | W | 0-3 |
| Challenger Ochsenhausen | 2021/07/15 11:10 | Andrei Putuntica v Dennis Klein | L | 3-0 |
| Challenger Ochsenhausen | 2021/07/15 09:10 | Josip Huzjak v Dennis Klein | W | 0-3 |
| Challenger Ochsenhausen | 2021/07/15 07:50 | Alexander Valuch v Dennis Klein | W | 2-3 |
| Challenger Ochsenhausen | 2021/07/14 12:30 | Dauud Cheaib v Dennis Klein | W | 0-3 |
| Challenger Ochsenhausen | 2021/07/14 11:10 | Evgueni Chtchetinine v Dennis Klein | L | 3-0 |
| Challenger Ochsenhausen | 2021/07/14 06:30 | Sven Happek v Dennis Klein | L | 3-2 |
| Challenger Ochsenhausen | 2021/06/29 14:40 | Dennis Klein v Dauud Cheaib | W | 3-0 |