Stadium: Court 7 Round: 44 Ground: Clay
| ITF M15 Kursumlijska Banja | 2023/09/18 12:30 | Martin Zeljenka v Artem Cherepin | 6-1,6-2 |
| ITF M15 Satu Mare | 2023/09/14 06:55 | Pietro Marino v Martin Zeljenka | 6-0,6-2 |
| ITF M15 Satu Mare | 2023/09/13 09:00 | Bence Kutasi v Martin Zeljenka | 2-6,1-6 |
| ITF M15 Satu Mare | 2023/09/12 08:40 | Martin Zeljenka v Eduard Silviu Schipor | 3-6,7-5,10-6 |
| ITF M15 Satu Mare | 2023/09/11 07:00 | Martin Zeljenka v Alexandru Luca | 6-0,6-7,10-8 |
| ITF M15 Budapest | 2023/09/03 09:30 | Kevin Humpfner v Martin Zeljenka | 6-2,6-2 |
| ITF M15 Budapest | 2023/08/27 07:00 | Alfred Almasi v Martin Zeljenka | 6-4,6-3 |
| ITF M25 Poznan | 2023/08/23 09:55 | Georgii Kravchenko v Martin Zeljenka | 6-1,6-1 |
| ITF M15 Kursumlijska Banja | 2023/09/18 07:00 | Tadija Radovanovic v Adrian Arcon | 6-4,6-3 |
| ITF M15 Kursumlijska Banja | 2023/09/17 08:30 | Tadija Radovanovic v Oskari Eerola | 5-7,7-5,10-8 |
| UTR Pro Sofia | 2023/09/10 05:00 | Tadija Radovanovic v Christos Antonopoulos | 6-4,4-6,0-6 |
| UTR Pro Sofia | 2023/09/09 08:00 | Milen Ianakiev v Tadija Radovanovic | 4-6,3-6 |
| UTR Pro Sofia | 2023/09/07 05:00 | Tadija Radovanovic v Nicolas Buitrago | 1-6,5-7 |
| UTR Pro Sofia | 2023/09/06 06:30 | Tadija Radovanovic v Rayane Oumaouche | 2-6,5-7 |
| UTR Pro Sofia | 2023/09/05 08:00 | Tadija Radovanovic v Vardan Manukyan | 2-6,6-4,6-4 |
| UTR Pro Sofia | 2023/09/04 05:00 | Tadija Radovanovic v Anthony Turchi | 6-0,4-6,6-4 |