Stadium: Court 1 Round: 25 Ground: Clay
| ITF M15 Kursumlijska Banja | 2024/07/03 07:00 | Benjamin Torrealba v Stefan Kostic | 6-1,6-1 |
| ITF M15 Kursumlijska Banja | 2024/06/18 11:10 | Stefan Kostic v Andrej Nedic | 3-6,3-6 |
| 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 Kursumlijska Banja | 2024/07/16 06:00 | Jordi Garcia Mestre v Lorenzo Gagliardo | 6-7,1-6 |
| ITF M15 Kursumlijska Banja | 2024/07/15 06:00 | Lautaro Correa Beguerie v Lorenzo Gagliardo | 0-6,1-6 |
| ITF M15 Kursumlijska Banja | 2024/07/14 09:00 | Joel Angel Lucero v Lorenzo Gagliardo | 1-6,0-6 |
| ITF M15 Kursumlijska Banja | 2024/07/08 08:30 | Lorenzo Gagliardo v Jacques-Kai Inoue | 2-6,3-6 |
| ITF M15 Kursumlijska Banja | 2024/07/07 06:00 | Lorenzo Gagliardo v Marko Milosavljevic | 6-4,6-7,10-8 |
| ITF M15 Kursumlijska Banja | 2024/06/30 06:00 | Lorenzo Gagliardo v Adrien Berrut | 1-6,2-6 |
| ITF M15 Villa Maria | 2024/02/20 13:00 | Arthur Laborde v Lorenzo Gagliardo | 6-4,6-4 |
| ITF M15 Villa Maria | 2024/02/19 13:00 | Jefferson Wendler Filho v Lorenzo Gagliardo | 2-6,6-3,7-10 |