Stadium: Court 1 Round: 62 Ground: Clay
| ITF M25 Madrid | 2023/12/03 10:30 | Eero Vasa v Stefan Cizelj-Zivkovic | 6-3,6-3 |
| ITF M25 Madrid | 2023/11/28 09:00 | Stijn Slump v Stefan Cizelj-Zivkovic | 6-4,6-2 |
| ITF M25 Madrid | 2023/11/27 10:00 | Stefan Cizelj-Zivkovic v Ivan Lopez Martos | 6-3,1-6,10-7 |
| ITF M25 Madrid | 2023/11/26 09:00 | Stefan Cizelj-Zivkovic v Artem Alekseychuk | 6-3,6-4 |
| ITF M15 Valencia | 2023/11/12 10:00 | Stefan Cizelj-Zivkovic v Noah Perfetti | 3-6,1-6 |
| ITF M25 Benicarlo | 2023/11/05 08:30 | Stefan Cizelj-Zivkovic v Nicolas Rafael Goldberg Alviani | 1-6,1-6 |
| ITF M15 Heraklion | 2023/10/23 07:30 | Stefan Cizelj-Zivkovic v Alexander Orlov | 2-6,6-2,11-13 |
| ITF M15 Heraklion | 2023/10/22 08:30 | Gabriel Matuszewski v Stefan Cizelj-Zivkovic | 4-6,4-6 |
| ITF M25 Heraklion | 2023/10/30 11:00 | Andrej Radojicic v Filippo Romano | 1-6,1-6 |
| ITF M25 Heraklion | 2023/10/29 10:30 | Dominique Graf v Andrej Radojicic | 3-6,2-6 |
| ITF M15 Heraklion | 2023/10/22 09:30 | Robert Guna v Andrej Radojicic | 6-1,6-2 |
| ITF M15 Kursumlijska Banja | 2023/09/20 07:25 | Viktor Jovic v Andrej Radojicic | 6-2,6-0 |
| ITF M15 Kursumlijska Banja | 2023/09/13 14:55 | Romeo Hadzimehmedovic v Andrej Radojicic | 3-6,6-3,6-1 |
| ITF M15 Kursumlijska Banja | 2023/08/30 08:55 | Andrej Radojicic v Luka Pavlovic | 3-6,3-6 |
| ITF M25 Osijek | 2023/08/07 10:50 | Matic Dimic v Andrej Radojicic | 6-3,6-1 |
| ITF M25 Osijek | 2023/08/06 07:30 | Ainur Garifullin v Andrej Radojicic | 0-6,4-6 |