Estadio: Ochsenhausen, Germany
| Challenger Series TT | 2023/04/17 09:50 | Sven Happek v Dillon Chambers | L | 1-3 |
| Challenger Series TT | 2023/02/27 17:30 | Sven Happek v Dillon Chambers | W | 3-2 |
| Challenger Series TT | 2023/01/12 20:10 | Sven Happek v Dillon Chambers | W | 3-2 |
| Challenger de Ochsenhausen | 2022/05/19 10:30 | Sven Happek v Dillon Chambers | L | 1-3 |
| Challenger de Ochsenhausen | 2022/05/12 11:10 | Dillon Chambers v Sven Happek | L | 3-0 |
| Challenger Series TT | 2022/02/24 18:50 | Sven Happek v Dillon Chambers | L | 1-3 |
| Challenger de Ochsenhausen | 2021/04/01 09:10 | Dillon Chambers v Sven Happek | L | 3-2 |
| Challenger de Ochsenhausen | 2021/03/11 10:50 | Sven Happek v Dillon Chambers | W | 3-2 |
| Challenger Series TT | 2023/04/18 09:10 | Sven Happek v Simon Berglund | L | 1-3 |
| Challenger Series TT | 2023/04/17 19:50 | Sven Happek v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2023/04/17 17:10 | Sven Happek v Makoto Nogami | L | 1-3 |
| Challenger Series TT | 2023/04/17 14:30 | Damian Zech v Sven Happek | W | 0-3 |
| Challenger Series TT | 2023/04/17 11:50 | Michael Engelhardt v Sven Happek | W | 0-3 |
| Challenger Series TT | 2023/04/17 09:50 | Sven Happek v Dillon Chambers | L | 1-3 |
| Challenger Series TT | 2023/04/17 07:50 | Sven Happek v Siddharta Almeida | L | 2-3 |
| Challenger Series TT | 2023/04/03 12:30 | Dennis Klein v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/04/18 12:50 | Siddharta Almeida v Dillon Chambers | W | 2-3 |
| Challenger Series TT | 2023/04/18 12:05 | Dauud Cheaib v Dillon Chambers | L | 3-1 |
| Challenger Series TT | 2023/04/18 09:50 | Michael Engelhardt v Dillon Chambers | W | 2-3 |
| Challenger Series TT | 2023/04/18 08:30 | Dillon Chambers v Makoto Nogami | W | 3-2 |
| Challenger Series TT | 2023/04/17 18:30 | Siddharta Almeida v Dillon Chambers | W | 1-3 |
| Challenger Series TT | 2023/04/17 15:50 | Dauud Cheaib v Dillon Chambers | L | 3-0 |
| Challenger Series TT | 2023/04/17 13:50 | Simon Berglund v Dillon Chambers | L | 3-0 |
| Challenger Series TT | 2023/04/17 09:50 | Sven Happek v Dillon Chambers | W | 1-3 |