Stadium: Court 1 Round: 19 Ground: Clay
| Challenger - Lüdenscheid | 2023/07/31 13:30 | Sandro Kopp v Marvin Moeller | 0-6,1-6 |
| Challenger - Bad Waltersdorf | 2023/09/17 10:10 | Sandro Kopp v Marlon Vankan | 6-2,3-6,6-2 |
| Challenger - Tulln | 2023/09/05 13:05 | Sandro Kopp v Gerald Melzer | 3-6,4-6 |
| ITF - M25 Maribor | 2023/09/01 09:55 | Kirill Kivattsev v Sandro Kopp | 7-6,6-7,6-4 |
| ITF - M25 Maribor | 2023/08/31 08:40 | Nikola Basic v Sandro Kopp | 5-7,7-6,0-6 |
| ITF - M25 Maribor | 2023/08/30 13:25 | Biagio Gramaticopolo v Sandro Kopp | 4-6,2-6 |
| Challenger Augsburg | 2023/08/20 09:30 | Sandro Kopp v Hendrik Jebens | 6-7,2-6 |
| ITF M25 - Lodz | 2023/08/10 10:00 | Sandro Kopp v Patrick Kaukovalta | 2-6,2-6 |
| ITF M25 - Lodz | 2023/08/09 09:25 | Sandro Kopp v Maciej Rajski | 6-7,7-6,6-3 |
| Challenger - Bad Waltersdorf | 2023/09/17 08:00 | Mick Veldheer v Marvin Moeller | 2-6,6-4,2-6 |
| Challenger - Stettin | 2023/09/10 08:30 | Marvin Moeller v Andrew Paulson | 2-6,2-6 |
| Challenger - Tulln | 2023/09/05 08:00 | Dalibor Svrcina v Marvin Moeller | 1-6,6-4,6-1 |
| Challenger - Tulln | 2023/09/04 08:00 | Marvin Moeller v Mats Moraing | 6-7,7-5,6-4 |
| Challenger - Tulln | 2023/09/03 10:05 | Marvin Moeller v Aldin Setkic | 6-3,3-6,6-2 |
| Challenger Augsburg | 2023/08/23 09:40 | Nicolas Zanellato v Marvin Moeller | 3-6,7-5,6-4 |
| Challenger Augsburg | 2023/08/22 13:30 | Marvin Moeller v Nikolas Sanchez Izquierdo | 2-6,6-2,6-0 |
| ITF M25 Ystad | 2023/08/20 09:30 | Valentin Vacherot v Marvin Moeller | 6-2,3-6,5-7 |