| Challenger Series TT | 2022/09/26 18:30 | Yannick Vostes v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2019/11/22 09:30 | Yannick Vostes v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2019/07/15 19:20 | Yannick Vostes v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2019/05/17 09:10 | Sven Happek v Yannick Vostes | L | 0-3 |
| Challenger Ochsenhausen | 2018/11/23 12:25 | Yannick Vostes v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2018/11/23 10:10 | Sven Happek v Yannick Vostes | L | 0-3 |
| Challenger Ochsenhausen | 2018/09/12 07:50 | Yannick Vostes v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2018/06/20 10:30 | Yannick Vostes v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2018/03/26 07:50 | Yannick Vostes v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2018/02/08 10:10 | Yannick Vostes v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2017/05/10 11:50 | Sven Happek v Yannick Vostes | L | 0-3 |