| Challenger Ochsenhausen | 2021/02/24 12:50 | Sven Happek v Dennis Klein | L | 0-3 |
| Challenger Ochsenhausen | 2021/01/29 10:50 | Sven Happek v Dennis Klein | L | 0-3 |
| Challenger Ochsenhausen | 2021/07/09 08:30 | Sven Happek v Valerij Rakov | L | 2-3 |
| Challenger Ochsenhausen | 2021/07/09 06:30 | Jeet Chandra v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2021/07/08 10:30 | Fedor Kuzmin v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2021/07/08 08:30 | Andriy Sitak v Sven Happek | L | 3-2 |
| Challenger Ochsenhausen | 2021/07/07 13:10 | Sven Happek v Evgueni Chtchetinine | L | 2-3 |
| Challenger Ochsenhausen | 2021/07/07 11:00 | Sven Happek v Snehit Suravajjula | L | 0-3 |
| Challenger Ochsenhausen | 2021/07/07 09:45 | Sven Happek v Dwain Schwarzer | W | 3-2 |
| Challenger Ochsenhausen | 2021/06/18 12:50 | Sven Happek v Harmeet Desai | L | 0-3 |
| Challenger Ochsenhausen | 2021/06/29 14:40 | Dennis Klein v Dauud Cheaib | W | 3-0 |
| Challenger Ochsenhausen | 2021/06/29 12:35 | Dennis Klein v Josip Huzjak | W | 3-0 |
| Challenger Ochsenhausen | 2021/06/29 09:40 | Henning Zeptner v Dennis Klein | W | 0-3 |
| Challenger Ochsenhausen | 2021/06/29 08:20 | Alexander Valuch v Dennis Klein | W | 0-3 |
| Challenger Ochsenhausen | 2021/06/28 18:00 | Dauud Cheaib v Dennis Klein | W | 1-3 |
| Challenger Ochsenhausen | 2021/06/28 16:00 | Josip Huzjak v Dennis Klein | W | 1-3 |
| Challenger Ochsenhausen | 2021/06/28 12:30 | Christopher Ligocki v Dennis Klein | W | 1-3 |
| Challenger Ochsenhausen | 2021/06/28 11:10 | Andrey Semenov v Dennis Klein | W | 1-3 |