Stadium: Court 1 Round: 25 Ground: Clay
| ITF M25 Osijek | 2023/08/08 10:05 | Marcell Bartakovics v Jaka Protic Zakelj | 7-6,2-6,13-11 |
| ITF M25 Osijek | 2023/08/07 12:15 | Nazar Oliynykov v Jaka Protic Zakelj | 1-6,5-7 |
| ITF M25 Osijek | 2023/08/07 07:30 | Jacques-Kai Inoue v Jaka Protic Zakelj | 6-7,0-6 |
| ITF M15 Novi Sad | 2023/07/31 11:00 | Jaka Protic Zakelj v Bautista Vilicich | 2-6,2-6 |
| ITF M15 Novi Sad | 2023/07/30 06:30 | Lukas Palovic v Jaka Protic Zakelj | 3-6,4-6 |
| ITF M15 Novi Sad | 2023/07/23 07:00 | Jaka Protic Zakelj v Attila Dominik Boros | 5-7,6-3,7-10 |
| ITF M25 Telfs | 2023/07/16 10:30 | Davide Ferrarolli v Jaka Protic Zakelj | 6-3,4-6,10-7 |
| ITF M15 Celje | 2023/06/27 07:00 | Jaka Protic Zakelj v Jakub Katuch | 3-6,6-7 |
| Challenger Augsburg | 2023/08/21 14:15 | Gilles Arnaud Bailly v Marko Topo | 6-1,6-2 |
| Challenger Banja Luka | 2023/08/12 18:15 | Kimmer Coppejans v Marko Topo | 6-0,6-1 |
| Challenger Banja Luka | 2023/08/11 10:00 | Toby Alex Kodat v Marko Topo | 3-6,3-6 |
| Challenger Banja Luka | 2023/08/09 10:30 | Marko Topo v Dragos Nicolae Madaras | 6-3,6-4 |
| Challenger Banja Luka | 2023/08/08 10:50 | Marko Topo v Geoffrey Blancaneaux | 6-0,6-2 |
| Challenger Banja Luka | 2023/08/07 14:30 | Marko Topo v Marat Sharipov | 6-3,6-2 |
| Challenger Banja Luka | 2023/08/07 09:30 | Marko Topo v Oleg Prihodko | 6-7,6-2,6-4 |
| ATP Hamburg | 2023/07/22 08:30 | Cristian Garin v Marko Topo | 6-3,6-4 |