Stadion: Court 3 Round: 25 Ground: Clay
| ITF - M25 - Pazardzhik | 2023/09/29 07:00 | Sandro Kopp v Clement Tabur | 0-6,1-6 |
| ITF - M25 - Pazardzhik | 2023/09/28 08:35 | Sandro Kopp v Jiri Barnat | 6-4,3-6,6-3 |
| ITF - M25 - Pazardzhik | 2023/09/26 07:45 | Sandro Kopp v Neil Oberleitner | 6-2,6-4 |
| Challenger - Bad Waltersdorf | 2023/09/19 10:00 | Dennis Novak v Sandro Kopp | 6-3,6-3 |
| Challenger - Bad Waltersdorf | 2023/09/18 08:00 | Sandro Kopp v Marvin Moeller | 4-6,7-6,5-7 |
| 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 - Pazardzhik | 2023/09/27 07:00 | Alexander Donski v Jiri Barnat | 2-6,4-6 |
| Challenger - Cassis | 2023/09/03 10:40 | Aidan Mchugh v Alexander Donski | 6-2,6-3 |
| Challenger - Prag | 2023/08/21 08:00 | Pawel Juszczak v Alexander Donski | 7-6,7-6 |
| Challenger - Prag | 2023/08/20 08:00 | Alexander Donski v Luca Potenza | 6-2,6-3 |
| ITF - M15 - Metzingen | 2023/07/26 12:30 | Stefan Popovic v Alexander Donski | 2-6,6-3,7-5 |
| ITF - M15 - Celje | 2023/06/28 12:00 | Alexander Donski v Pawel Juszczak | 5-7,4-6 |
| ITF - M15 - Store | 2023/06/22 07:30 | Luca Wiedenmann v Alexander Donski | 6-2,6-3 |
| ITF - M15 - Litija | 2023/06/15 10:00 | Tomas Farjat v Alexander Donski | 7-5,6-2 |