Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2024/05/06 12:55 | Sven Happek v Daniel Rinderer | L | 0-3 |
| Challenger Series TT | 2024/04/12 08:15 | Sven Happek v Daniel Rinderer | L | 0-3 |
| Challenger Series TT | 2023/10/05 09:10 | Daniel Rinderer v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/01/09 09:30 | Daniel Rinderer v Sven Happek | L | 3-2 |
| Challenger Ochsenhausen | 2022/07/18 17:10 | Sven Happek v Daniel Rinderer | L | 1-3 |
| Challenger Series TT | 2022/07/11 13:50 | Daniel Rinderer v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2022/06/23 12:30 | Daniel Rinderer v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2022/05/12 17:10 | Daniel Rinderer v Sven Happek | L | 3-2 |
| Challenger Series TT | 2025/11/25 11:00 | Sven Happek v Matthias Danzer | L | 0-3 |
| Challenger Series TT | 2025/11/25 09:45 | Irvin Bertrand v Sven Happek | L | 3-0 |
| Challenger Series TT | 2025/11/25 08:00 | Jaime Lama v Sven Happek | W | 2-3 |
| Challenger Series TT | 2025/11/24 18:30 | Manuel Echaveguren v Sven Happek | W | 0-3 |
| Challenger Series TT | 2025/11/24 15:30 | Matthias Danzer v Sven Happek | L | 3-1 |
| Challenger Series TT | 2025/11/24 14:00 | Taiga Tamari v Sven Happek | L | 3-2 |
| Challenger Series TT | 2025/11/24 12:00 | Oleksii Naplokov v Sven Happek | W | 0-3 |
| Challenger Series TT | 2025/11/24 11:00 | Irvin Bertrand v Sven Happek | L | 3-0 |
| Challenger Series TT | 2025/10/21 10:35 | Xavier Dixon v Daniel Rinderer | L | 3-0 |
| Challenger Series TT | 2025/10/21 09:40 | Florian Bluhm v Daniel Rinderer | L | 3-0 |
| Challenger Series TT | 2025/10/20 15:00 | Daniel Rinderer v Rafael Turrini | L | 1-3 |
| Challenger Series TT | 2025/10/20 13:30 | Daniel Rinderer v Marco Stefanidis | L | 1-3 |
| Challenger Series TT | 2025/10/20 12:00 | Luis Kraus v Daniel Rinderer | W | 1-3 |
| Challenger Series TT | 2025/10/20 10:30 | Florian Bluhm v Daniel Rinderer | L | 3-1 |
| Challenger Series TT | 2025/10/20 09:00 | Daniel Rinderer v Jaime Lama | W | 3-0 |
| Challenger Series TT | 2025/10/20 07:30 | Daniel Rinderer v Xavier Dixon | W | 3-0 |