Stadium: Court 16 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2023/10/22 08:30 | Gabriel Matuszewski v Stefan Cizelj-Zivkovic | 4-6,4-6 |
| ITF M15 Heraklion | 2023/10/15 07:00 | Stefan Cizelj-Zivkovic v Graham Maassen | 3-6,3-6 |
| ITF M15 Kursumlijska Banja | 2023/09/17 08:30 | Stefan Cizelj-Zivkovic v Jerko Brkic | 3-6,6-4,8-10 |
| ITF M15 Kursumlijska Banja | 2023/09/10 09:30 | Alexandar Balj v Stefan Cizelj-Zivkovic | 6-2,6-2 |
| ITF M15 Madrid | 2023/09/05 10:00 | Stefan Cizelj-Zivkovic v Luis Francisco | 3-6,2-6 |
| ITF M15 Madrid | 2023/09/04 07:30 | Stefan Cizelj-Zivkovic v Cian Maguire | 6-3,6-7,10-6 |
| ITF M15 Madrid | 2023/09/03 12:00 | Tommaso Carnevale-Miino v Stefan Cizelj-Zivkovic | 6-7,2-6 |
| ITF M25 Gandia | 2023/07/17 10:00 | Patricio Alvarado v Stefan Cizelj-Zivkovic | 6-4,6-2 |
| ITF M15 Heraklion | 2023/10/17 06:30 | Alexander Orlov v Maciej Matuszczyk | 6-2,3-6,10-5 |
| ITF M15 Heraklion | 2023/10/16 06:30 | Alexander Orlov v Dario Huber | 5-7,7-6,14-12 |
| ITF M15 Monastir | 2023/10/02 08:00 | Alexander Orlov v Rayen Hermassi | 3-6,6-1,8-10 |
| ITF M15 Monastir | 2023/10/01 08:00 | Alexander Orlov v Rodrigo Mora Clement | 7-5,6-4 |
| ITF M15 Monastir | 2023/09/25 08:30 | Paul Werren v Alexander Orlov | 6-3,6-2 |
| ITF M15 Monastir | 2023/09/24 10:30 | Eugenio Almeida Junior v Alexander Orlov | 3-6,3-6 |
| ITF M15 Monastir | 2023/09/20 12:25 | Alexander Orlov v Stefano Reitano | 3-6,4-6 |
| ITF M15 Monastir | 2023/09/18 14:00 | Edouard Villoslada v Alexander Orlov | 7-5,5-7,4-10 |