| Challenger Series TT | 2023/06/26 09:50 | Damian Zech v Sven Happek | W | 2-3 |
| Challenger Series TT | 2023/05/22 09:50 | Sven Happek v Damian Zech | L | 0-3 |
| Challenger Series TT | 2023/04/20 11:50 | Sven Happek v Damian Zech | W | 3-0 |
| Challenger Series TT | 2023/04/17 14:30 | Damian Zech v Sven Happek | W | 0-3 |
| Challenger Series TT | 2023/01/12 10:10 | Damian Zech v Sven Happek | W | 1-3 |
| Challenger Series TT | 2022/12/05 15:30 | Damian Zech v Sven Happek | L | 3-2 |
| Challenger Series TT | 2022/12/01 08:50 | Sven Happek v Damian Zech | W | 3-0 |
| Challenger Series TT | 2022/09/19 19:50 | Damian Zech v Sven Happek | W | 0-3 |
| Challenger Series TT | 2024/02/05 09:50 | Kirill Fadeev v Sven Happek | L | 3-0 |
| Challenger Series TT | 2024/02/05 07:55 | Sven Happek v Dauud Cheaib | L | 1-3 |
| Challenger Series TT | 2024/01/30 08:50 | Marius Henninger v Sven Happek | L | 3-0 |
| Challenger Series TT | 2024/01/29 20:50 | Alberto Lillo v Sven Happek | L | 3-0 |
| Challenger Series TT | 2024/01/29 18:50 | Adrien Coton v Sven Happek | W | 2-3 |
| Challenger Series TT | 2024/01/29 16:50 | Sven Happek v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2024/01/29 14:10 | Sven Happek v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2024/01/29 12:10 | Sven Happek v Benjamin Fruchart | L | 0-3 |
| Challenger Series TT | 2024/02/05 12:00 | Rafael Turrini v Damian Zech | L | 3-0 |
| Challenger Series TT | 2024/02/05 07:30 | Kirill Fadeev v Damian Zech | L | 3-1 |
| Challenger Series TT | 2024/01/19 09:30 | Rafael Turrini v Damian Zech | L | 3-2 |
| Challenger Series TT | 2024/01/19 08:10 | Damian Zech v Irvin Bertrand | L | 0-3 |
| Challenger Series TT | 2024/01/18 17:30 | Alexander Valuch v Damian Zech | L | 3-2 |
| Challenger Series TT | 2024/01/18 15:30 | Jean Rassouw v Damian Zech | W | 2-3 |
| Challenger Series TT | 2024/01/18 13:30 | Damian Zech v Dauud Cheaib | L | 1-3 |
| Challenger Series TT | 2024/01/18 11:30 | Damian Zech v Mike Hollo | L | 0-3 |