Stadium: Court 6 Round: 62 Ground: Clay
| ITF M25 Split | 2023/04/19 08:00 | Nikola Basic v Eric Vanshelboim | 3-6,2-6 |
| ITF M25 Dubrovnik | 2023/04/05 07:00 | Nikola Basic v Sebastian Gima | 0-6,1-6 |
| ITF M25 Dubrovnik | 2023/04/04 08:30 | Nikola Basic v Miha Vetrih | 6-4,6-0 |
| ITF M25 Dubrovnik | 2023/04/03 10:25 | Nikola Basic v Lovro Maricic | 6-0,6-1 |
| UTR Pro Zadar | 2023/04/01 11:00 | Duje Kekez v Nikola Basic | 6-3,6-2 |
| UTR Pro Zadar | 2023/03/31 06:00 | Tim Heger v Nikola Basic | 6-4,6-2 |
| UTR Pro Zadar | 2023/03/30 07:30 | Sebastian Prechtel v Nikola Basic | 2-6,6-3,7-5 |
| UTR Pro Zadar | 2023/03/28 09:00 | Paul Woerner v Nikola Basic | 6-7,4-6 |
| ITF M15 Kursumlijska Banja | 2023/04/23 12:00 | Jacques-Kai Inoue v Romeo Hadzimehmedovic | 3-6,6-7 |