Stadium: Ochsenhausen, Germany Round: 28
| Challenger Series TT | 2022/09/19 15:50 | Sven Happek v Marcel Neumaier | L | 1-3 |
| Challenger Ochsenhausen | 2019/07/10 07:50 | Marcel Neumaier v Sven Happek | W | 1-3 |
| Challenger Series TT | 2025/03/25 08:30 | Sven Happek v Florian Bluhm | L | 1-3 |
| Challenger Series TT | 2025/03/24 17:30 | Sven Happek v Xavier Dixon | L | 0-3 |
| Challenger Series TT | 2025/03/24 15:30 | Sven Happek v Chia-An Yang | L | 2-3 |
| Challenger Series TT | 2025/03/24 13:30 | Jing-You Peng v Sven Happek | W | 0-3 |
| Challenger Series TT | 2025/03/24 11:30 | Ting-Wei Liang v Sven Happek | L | 3-2 |
| Challenger Series TT | 2025/03/24 10:00 | Sven Happek v Jaime Lama | W | 3-0 |
| Challenger Series TT | 2025/03/24 08:30 | Sven Happek v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2025/02/25 09:30 | Sven Happek v Chia-Hao Chang | W | 3-0 |
| Challenger Series TT | 2025/04/15 07:00 | Pylyp Koloidenko v Marcel Neumaier | L | 3-2 |
| Challenger Series TT | 2025/04/14 17:30 | Joon Shim v Marcel Neumaier | L | 3-0 |
| Challenger Series TT | 2025/04/14 14:30 | Joel Nabarro v Marcel Neumaier | W | 1-3 |
| Challenger Series TT | 2025/04/14 13:00 | Akos Kishegyi v Marcel Neumaier | L | 3-0 |
| Challenger Series TT | 2025/04/14 11:00 | Tom Colvin v Marcel Neumaier | W | 0-3 |
| Challenger Series TT | 2025/04/14 10:00 | Carlos Fernandez v Marcel Neumaier | L | 3-2 |
| Challenger Series TT | 2025/04/14 06:30 | Dennis Klein v Marcel Neumaier | L | 3-0 |
| Challenger Series TT | 2024/08/13 08:00 | Marcel Neumaier v Dauud Cheaib | L | 0-3 |