| Challenger Series TT | 2022/07/04 17:10 | Josip Huzjak v Sven Happek | L | 0-3 |
| Challenger Ochsenhausen | 2022/06/24 07:10 | Josip Huzjak v Sven Happek | L | 1-3 |
| Challenger Series TT | 2022/02/25 07:30 | Sven Happek v Josip Huzjak | L | 3-2 |
| Challenger Ochsenhausen | 2021/12/15 10:10 | Sven Happek v Josip Huzjak | W | 2-3 |
| Challenger Ochsenhausen | 2021/12/03 08:50 | Sven Happek v Josip Huzjak | L | 3-2 |
| Challenger Ochsenhausen | 2021/07/14 11:50 | Sven Happek v Josip Huzjak | L | 3-1 |
| Challenger Ochsenhausen | 2021/03/31 09:50 | Josip Huzjak v Sven Happek | L | 2-3 |
| Challenger Ochsenhausen | 2021/03/10 10:50 | Sven Happek v Josip Huzjak | L | 3-1 |
| Challenger Ochsenhausen | 2022/07/18 12:30 | Josip Huzjak v Daniel Rinderer | L | 0-3 |
| Challenger Ochsenhausen | 2022/07/18 09:10 | Sebastian Hegenberger v Josip Huzjak | W | 0-3 |
| Challenger Ochsenhausen | 2022/07/18 07:10 | Josip Huzjak v Makoto Nogami | W | 3-1 |
| Challenger Series TT | 2022/07/05 09:10 | Josip Huzjak v Mohammadali Rouintanesfahani | W | 3-2 |
| Challenger Series TT | 2022/07/04 19:50 | Josip Huzjak v Amir Hossein Hodaei | W | 3-0 |
| Challenger Series TT | 2022/07/04 17:10 | Josip Huzjak v Sven Happek | L | 0-3 |
| Challenger Series TT | 2022/07/04 14:30 | Kirill Fadeev v Josip Huzjak | L | 3-2 |
| Challenger Series TT | 2022/07/04 11:50 | Nico Wenger v Josip Huzjak | W | 0-3 |
| Challenger Ochsenhausen | 2022/07/18 11:50 | Sebastian Hegenberger v Sven Happek | W | 0-3 |
| Challenger Ochsenhausen | 2022/07/18 09:50 | Sven Happek v Makoto Nogami | L | 1-3 |
| Challenger Ochsenhausen | 2022/07/18 07:50 | Sven Happek v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2022/07/12 09:50 | Kirill Fadeev v Sven Happek | L | 3-1 |
| Challenger Series TT | 2022/07/12 08:30 | Sven Happek v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2022/07/11 18:30 | Amir Hossein Hodaei v Sven Happek | L | 3-2 |
| Challenger Series TT | 2022/07/11 15:50 | Michael Engelhardt v Sven Happek | W | 2-3 |
| Challenger Series TT | 2022/07/11 13:50 | Daniel Rinderer v Sven Happek | L | 3-0 |