Stadium: Court 1 Round: 14 Ground: Clay
| 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 Lodž | 2023/08/10 10:00 | Sandro Kopp v Patrick Kaukovalta | 2-6,2-6 |
| ITF M25 Lodž | 2023/08/09 09:25 | Sandro Kopp v Maciej Rajski | 6-7,7-6,6-3 |
| Challenger Luedenscheid | 2023/07/31 13:30 | Sandro Kopp v Marvin Moeller | 0-6,1-6 |
| ITF M25 Oldenzaal | 2023/08/31 08:00 | Jeremy Jahn v Marlon Vankan | 7-6,6-2 |
| ITF M25 Oldenzaal | 2023/08/29 14:40 | Marlon Vankan v Brian Bozemoj | 4-6,6-3,6-4 |
| ITF M15 Trier | 2023/08/23 10:55 | Marlon Vankan v Stepan Baum | 2-6,0-6 |
| ITF M25 Koksijde | 2023/08/18 11:25 | Jeremy Jahn v Marlon Vankan | 6-4,6-1 |
| ITF M25 Koksijde | 2023/08/17 11:25 | Gilles Arnaud Bailly v Marlon Vankan | 4-6,5-7 |
| ITF M25 Koksijde | 2023/08/15 16:55 | Marlon Vankan v Tibo Colson | 6-4,6-4 |
| ITF M15 Eupen | 2023/08/13 13:00 | Marlon Vankan v Marc Majdandzic | 7-5,7-6 |
| ITF M15 Eupen | 2023/08/12 15:00 | Simon Beaupain v Marlon Vankan | 6-7,1-6 |