| Challenger Ochsenhausen | 2021/03/31 09:50 | Josip Huzjak v Sven Happek | W | 2-3 |
| Challenger Ochsenhausen | 2021/03/10 10:50 | Sven Happek v Josip Huzjak | W | 3-1 |
| Challenger Ochsenhausen | 2021/01/29 08:50 | Sven Happek v Josip Huzjak | L | 1-3 |
| Challenger Ochsenhausen | 2020/04/29 10:30 | Sven Happek v Josip Huzjak | W | 4-0 |
| Challenger Ochsenhausen | 2020/03/17 14:15 | Josip Huzjak v Sven Happek | W | 0-3 |
| Challenger Ochsenhausen | 2020/03/16 10:50 | Sven Happek v Josip Huzjak | L | 2-3 |
| Challenger Ochsenhausen | 2020/02/06 08:50 | Sven Happek v Josip Huzjak | W | 3-0 |
| Challenger Ochsenhausen | 2020/02/04 08:40 | Sven Happek v Josip Huzjak | W | 3-2 |
| Challenger Ochsenhausen | 2021/07/14 09:10 | Sven Happek v Dauud Cheaib | L | 2-3 |
| Challenger Ochsenhausen | 2021/07/14 06:30 | Sven Happek v Dennis Klein | W | 3-2 |
| 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 | 2021/07/14 09:50 | Josip Huzjak v Andrei Putuntica | L | 1-3 |
| Challenger Ochsenhausen | 2021/07/14 07:50 | Josip Huzjak v Alexander Valuch | L | 2-3 |
| Challenger Ochsenhausen | 2021/07/06 14:00 | Jeet Chandra v Josip Huzjak | W | 1-3 |
| Challenger Ochsenhausen | 2021/07/06 13:15 | Maciej Kubik v Josip Huzjak | L | 3-1 |
| Challenger Ochsenhausen | 2021/07/06 11:00 | Josip Huzjak v Snehit Suravajjula | W | 3-2 |
| Challenger Ochsenhausen | 2021/07/06 07:40 | Josip Huzjak v Harmeet Desai | L | 0-3 |
| Challenger Ochsenhausen | 2021/07/05 18:40 | Josip Huzjak v Alessandro Baciocchi | W | 3-1 |
| Challenger Ochsenhausen | 2021/07/05 17:20 | Josip Huzjak v Maciej Kubik | L | 2-3 |