| Challenger Ochsenhausen | 2021/03/15 16:20 | Pekka Pelz v Sven Happek | W | 3-1 |
| Challenger Series TT | 2023/02/21 09:30 | Miguel Nunez v Pekka Pelz | L | 3-2 |
| Challenger Series TT | 2023/02/21 08:10 | Andrei Putuntica v Pekka Pelz | L | 3-1 |
| Challenger Series TT | 2023/02/20 14:50 | Dauud Cheaib v Pekka Pelz | L | 3-2 |
| Challenger Series TT | 2023/02/20 12:50 | Norbert Tauler v Pekka Pelz | L | 3-1 |
| Challenger Series TT | 2023/02/20 12:10 | David Reitspies v Pekka Pelz | L | 3-1 |
| Challenger Series TT | 2023/02/20 07:30 | Daniel Rinderer v Pekka Pelz | L | 3-1 |
| Challenger Ochsenhausen | 2021/04/06 11:00 | Pekka Pelz v Jiri Martinko | L | 0-3 |
| Challenger Ochsenhausen | 2021/04/06 07:40 | Pekka Pelz v Josip Huzjak | L | 1-3 |
| TT Star Series | 2023/03/25 11:15 | Henning Zeptner v Sven Happek | W | 0-3 |
| TT Star Series | 2023/03/25 08:10 | Sven Happek v Antonin Gavlas | L | 0-3 |
| TT Star Series | 2023/03/24 14:15 | Sven Happek v Michal Obeslo | L | 0-3 |
| TT Star Series | 2023/03/24 12:45 | Boguslav Koszyk v Sven Happek | L | 3-0 |
| TT Star Series | 2023/03/24 10:45 | Oleksandr Tymofieiev v Sven Happek | L | 3-2 |
| TT Star Series | 2023/03/24 08:10 | Jakub Kleprlik v Sven Happek | W | 1-3 |
| TT Star Series | 2023/03/23 12:15 | Sven Happek v Ondrej Kveton | L | 1-3 |
| TT Star Series | 2023/03/23 10:15 | Amirreza Abbasi v Sven Happek | W | 2-3 |