| 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 | 2021/01/29 08:50 | Sven Happek v Josip Huzjak | W | 1-3 |
| 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 Series TT | 2022/07/04 09:50 | Josip Huzjak v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2022/07/04 07:50 | Josip Huzjak v Amirreza Abbasi | L | 0-3 |
| Challenger Ochsenhausen | 2022/06/24 09:10 | Amirreza Abbasi v Josip Huzjak | L | 3-0 |
| Challenger Ochsenhausen | 2022/06/24 07:10 | Josip Huzjak v Sven Happek | L | 1-3 |
| Challenger Ochsenhausen | 2022/06/23 19:10 | Daniel Rinderer v Josip Huzjak | L | 3-2 |
| Challenger Ochsenhausen | 2022/06/23 16:30 | Dennis Klein v Josip Huzjak | L | 3-0 |
| Challenger Series TT | 2022/07/04 15:10 | Amirreza Abbasi v Sven Happek | L | 3-1 |
| Challenger Series TT | 2022/07/04 12:30 | Kirill Fadeev v Sven Happek | L | 3-0 |
| Challenger Series TT | 2022/07/04 11:10 | Amir Hossein Hodaei v Sven Happek | L | 3-2 |
| Challenger Series TT | 2022/07/04 06:30 | Nico Wenger v Sven Happek | W | 1-3 |
| Challenger Ochsenhausen | 2022/06/28 09:10 | Sven Happek v Simon Berglund | L | 0-3 |
| Challenger Ochsenhausen | 2022/06/28 07:10 | Sven Happek v Amir Hossein Hodaei | L | 0-3 |
| Challenger Ochsenhausen | 2022/06/27 17:10 | Sven Happek v Dauud Cheaib | L | 0-3 |
| Challenger Ochsenhausen | 2022/06/27 13:50 | Sven Happek v Damian Zech | W | 3-1 |