Stadium: Court 18 Round: 62 Ground: Clay
| 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 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 M25 Madrid | 2023/09/10 13:00 | Pablo Hermoso v Ivan Lopez Martos | 6-3,7-5 |