Stadium: Court 15 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Kursumlijska Banja | 2023/06/14 10:20 | Stefan Cizelj-Zivkovic v Dusan Obradovic | 4-6,1-6 |
| ITF M25 Kursumlijska Banja | 2023/06/06 10:40 | Stefan Cizelj-Zivkovic v Novak Novakovic | 1-6,1-6 |
| ITF M25 Kursumlijska Banja | 2023/06/05 15:10 | Marko Andrejic v Stefan Cizelj-Zivkovic | 3-6,3-6 |
| ITF M25 Kursumlijska Banja | 2023/06/04 13:00 | Charles Dossetter v Stefan Cizelj-Zivkovic | 2-6,0-6 |
| ITF M15 Kursumlijska Banja | 2023/05/30 12:30 | Nikita Mashtakov v Stefan Cizelj-Zivkovic | 6-1,6-1 |
| ITF M15 Kursumlijska Banja | 2023/05/24 07:00 | Andrea Picchione v Stefan Cizelj-Zivkovic | 6-3,6-1 |
| ITF M15 Telde | 2023/04/09 09:00 | Stefan Cizelj-Zivkovic v Vicente O Moratalla | 3-6,3-6 |
| ITF M15 Antalya | 2023/03/05 06:30 | Rimpei Kawakami v Stefan Cizelj-Zivkovic | 6-0,6-1 |
| ITF M15 Tabasco | 2023/05/23 19:30 | Christopher Bulus v Graham Maassen | 6-0,6-2 |
| ITF M15 Tabasco | 2023/05/22 16:00 | Alexey Shtengelov v Graham Maassen | 3-6,3-6 |
| ITF M15 Tabasco | 2023/05/21 19:00 | Ricardo Reyna v Graham Maassen | 2-6,6-3,6-10 |
| ITF M25 Xalapa | 2023/05/15 19:30 | Juan Sebastian Osorio v Graham Maassen | 6-0,6-3 |
| ITF M25 Xalapa | 2023/05/14 17:00 | Tobias Sonne v Graham Maassen | 6-4,4-6,10-12 |
| UTR Pro Miki | 2023/04/23 00:30 | Brody Nejedly v Graham Maassen | 3-6,5-6 |
| UTR Pro Miki | 2023/04/19 04:29 | Graham Maassen v Taichi Wakamatsu | 1-6,7-5,6-7 |
| UTR Pro Miki | 2023/04/18 00:30 | Graham Maassen v Taketo Takamisawa | 4-6,0-6 |