Stadium: Court 2 Round: 25 Ground: Clay
| 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 Doboj | 2023/05/10 08:00 | Kirill Mishkin v Stefan Kostic | 6-2,1-6,6-1 |
| ITF M15 Zlatibor | 2022/09/11 09:45 | Stefan Kostic v Milos Vukovic | 0-6,3-6 |
| ITF M15 Kursumlijska Banja | 2024/04/20 16:30 | Dan Alexandru Tomescu v Simon A Ivanov | 6-4,2-6,6-3 |
| ITF M15 Kursumlijska Banja | 2024/04/16 17:05 | Gabriel Donev v Simon A Ivanov | 7-6,6-7,5-7 |
| ITF M15 Antalya | 2024/01/24 06:30 | Simon A Ivanov v David Prasievi | 7-5,3-6,6-2 |
| ITF M15 Antalya | 2024/01/17 06:30 | Simon A Ivanov v Carlos Gimeno Valero | 4-6,1-6 |
| ITF M15 Antalya | 2024/01/11 06:30 | Niccolo Catini v Simon A Ivanov | 6-1,6-1 |
| ITF M15 Limassol | 2023/11/28 13:45 | Joshua Goodger v Simon A Ivanov | 6-4,6-2 |
| ITF M25 Pazardzhik | 2023/10/05 07:00 | Andrey Chepelev v Simon A Ivanov | 6-4,6-0 |
| ITF M25 Pazardzhik | 2023/09/28 07:00 | Nicholas David Ionel v Simon A Ivanov | 6-0,6-1 |