Stadium: Court 2 Round: 26 Ground: Clay
| ITF - M25 Maribor | 2023/08/30 13:30 | Patrik Jurina v Nikola Basic | 3-6,4-6 |
| ITF M25 - Lesa | 2023/08/22 10:25 | Niccolo Catini v Nikola Basic | 6-2,4-6,6-3 |
| ITF M25 - Lesa | 2023/08/21 10:55 | Nikola Basic v Gian Marco Ortenzi | 6-7,3-6 |
| ITF M25 - Lesa | 2023/08/20 08:00 | Nikola Basic v Christian Fellin | 6-1,6-4 |
| ITF M25 - Osijek | 2023/08/09 13:00 | Nikola Basic v Matej Dodig | 1-6,2-6 |
| ITF M15 Litija | 2023/06/14 12:10 | Nikola Basic v Olaf Pieczkowski | 0-6,2-6 |
| ITF M15 Litija | 2023/06/13 07:00 | Nikola Basic v Igor Dudun | 6-1,6-4 |
| ITF M15 Litija | 2023/06/12 11:00 | Nikola Basic v Leon Benedict | 6-3,6-0 |
| 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 - Lüdenscheid | 2023/07/31 13:30 | Sandro Kopp v Marvin Moeller | 0-6,1-6 |
| Challenger - Lüdenscheid | 2023/07/30 09:00 | Sandro Kopp v Benjamin Winter Lopez | 6-3,6-4 |
| ITF - M25 Kramsach | 2023/07/28 09:00 | Sandro Kopp v Kalin Ivanovski | 6-7,4-6 |
| ITF - M25 Kramsach | 2023/07/27 13:45 | Sandro Kopp v Buvaysar Gadamauri | 7-6,6-2 |