Stadium: Court 4 Round: 25 Ground: Clay
| ITF M15 Kursumlijska Banja | 2024/05/28 10:45 | Sean Hess v Stefan Kostic | 6-0,6-4 |
| ITF M15 Kursumlijska Banja | 2024/05/14 09:00 | Stefan Kostic v Simon A Ivanov | 3-6,2-6 |
| ITF M15 Kursumlijska Banja | 2024/05/01 08:30 | Stefan Kostic v Alexander Frusina | 3-6,2-6 |
| ITF M15 Kursumlijska Banja | 2023/08/29 11:10 | Stefan Kostic v Romeo Hadzimehmedovic | 4-6,6-4,1-6 |
| ITF M15 Sarajevo | 2023/06/07 07:00 | Luka Mikrut v Stefan Kostic | 6-2,6-1 |
| ITF M25 Kiseljak | 2023/05/30 10:55 | Nicolas Zanellato v Stefan Kostic | 6-1,6-1 |
| ITF M15 Brcko | 2023/05/23 10:00 | Stefan Kostic v Alexandre Aubriot | 0-6,1-6 |
| ITF M15 Prijedor | 2023/05/19 07:00 | Tim Ruehl v Stefan Kostic | 6-1,6-1 |
| ITF M15 Prijedor | 2024/05/18 11:35 | Pawel Juszczak v Andrej Nedic | 7-6,6-2 |
| ITF M15 Prijedor | 2024/05/17 12:40 | Denis Klok v Andrej Nedic | 2-6,2-6 |
| ITF M15 Prijedor | 2024/05/16 12:05 | Drazen Petrovic v Andrej Nedic | 0-6,2-6 |
| ITF M15 Prijedor | 2024/05/14 15:45 | Marc Majdandzic v Andrej Nedic | 2-6,0-6 |
| ITF M15 Doboj | 2024/05/10 10:45 | Milos Karol v Andrej Nedic | 4-6,6-3,6-3 |
| ITF M15 Doboj | 2024/05/09 11:25 | Jan Kupcic v Andrej Nedic | 1-6,6-4,6-7 |
| ITF M15 Doboj | 2024/05/07 10:15 | Charlie Camus v Andrej Nedic | 2-6,3-6 |
| ITF M15 Kursumlijska Banja | 2024/04/27 09:45 | Andrej Nedic v Nikola Milojevic | 4-6,0-6 |