Stadium: Court 1 Round: 62 Ground: Clay
| UTR Pro Tennis Series - Nis | 2021/10/09 08:00 | Aleksa Mardjonovic v Veljko Krstic | 6-3,6-4 |
| ITF M15 - Beograd | 2023/06/26 12:35 | Tom Evans v Veljko Krstic | 6-7,1-6 |
| ITF M15 - Beograd | 2023/06/25 12:00 | Adrian Arcon v Veljko Krstic | 1-6,4-6 |
| ITF M15 - Kursumlijska Banja | 2023/06/19 09:30 | Veljko Krstic v Aleksei Khomich | 6-3,4-6,6-10 |
| ITF M15 - Kursumlijska Banja | 2023/06/18 07:00 | Veljko Krstic v Marko Miladinovic | 6-4,7-5 |
| ITF M25 - Skopje | 2023/06/06 07:30 | Alen Bill v Veljko Krstic | 6-4,6-2 |
| ITF M25 - Skopje | 2023/06/05 08:00 | Filip Krolo v Veljko Krstic | 5-7,4-6 |
| ITF M25 - Skopje | 2023/06/04 07:00 | Nikola Puric v Veljko Krstic | 6-3,1-6,9-11 |
| ITF M15 - Kursumlijska Banja | 2023/05/28 14:00 | Federico Valle v Veljko Krstic | 7-6,7-6 |
| ITF M15 - Beograd | 2023/06/26 10:20 | Marko Miladinovic v Aleksa Mardjonovic | 5-7,2-6 |
| ITF M15 - Beograd | 2023/06/25 09:30 | Joel Angel Lucero v Aleksa Mardjonovic | 4-6,1-6 |
| ITF M15 - Brcko | 2023/05/26 14:00 | Peter Benjamin Privara v Aleksa Mardjonovic | 6-1,6-7,4-6 |
| ITF M15 - Brcko | 2023/05/25 09:15 | Alexandre Aubriot v Aleksa Mardjonovic | 2-6,3-6 |
| ITF M15 - Brcko | 2023/05/24 07:30 | Aleksa Mardjonovic v Aldin Setkic | 2-6,7-6,7-5 |
| ITF M15 - Brcko | 2023/05/22 09:30 | Zak Talic v Aleksa Mardjonovic | 4-6,1-6 |
| ITF M15 - Osijek | 2023/04/30 14:00 | Federico Mirgone v Aleksa Mardjonovic | 6-3,2-6,10-5 |
| UTR Pro - Beograd | 2023/04/23 06:00 | Maxime Hamou v Aleksa Mardjonovic | 3-6,6-3,6-6 |