Stadium: Court 1 Round: 26 Ground: Clay
| ITF M15 Novi Sad | 2021/08/06 09:00 | Domagoj Biljesko v Francisco Comesana | 2-6,5-7 |
| ITF M15 Novi Sad | 2021/08/04 07:55 | Domagoj Biljesko v Aziz Ouakaa | 5-7,6-1,6-3 |
| ITF M15 Novi Sad | 2021/08/03 08:00 | Domagoj Biljesko v Millen Hurrion | 7-5,6-2 |
| ITF M15 Novi Sad | 2021/08/02 08:00 | Domagoj Biljesko v Petar Jovanovic | 6-3,6-1 |
| ITF M15 Novi Sad | 2021/08/01 12:15 | Domagoj Biljesko v Kristian Juhas | 7-5,6-4 |
| ITF M15 Novi Sad | 2021/07/25 09:30 | Lazar Milicevic v Domagoj Biljesko | 6-2,6-3 |
| ITF M15 Doboj | 2021/07/14 13:10 | Dusan Obradovic v Domagoj Biljesko | 7-5,6-2 |
| ITF M25 Velenje | 2021/07/07 10:05 | Bor Artnak v Domagoj Biljesko | 6-4,1-6,6-2 |
| ITF M15 Telavi | 2021/08/07 06:30 | Oleg Prihodko v Yan Bondarevskiy | 7-6,6-3 |
| ITF M15 Telavi | 2021/08/06 06:30 | Yanki Erel v Oleg Prihodko | 6-3,3-6,5-7 |
| ITF M15 Telavi | 2021/08/05 06:30 | Julian Cash v Oleg Prihodko | 1-6,5-7 |
| ITF M15 Telavi | 2021/08/04 06:30 | Alessandro Ingarao v Oleg Prihodko | 0-6,5-7 |
| ITF M15 Telavi | 2021/08/03 11:10 | Roman Andres Burruchaga v Oleg Prihodko | 1-6,4-6 |
| ITF M25 Denia | 2021/07/28 10:05 | Carlos Sanchez Jover v Oleg Prihodko | 7-5,7-5 |
| ITF M25 Denia | 2021/07/27 08:00 | Oleg Prihodko v Alejandro Garcia | 6-3,7-6 |
| ITF M25 Denia | 2021/07/26 09:30 | Oleg Prihodko v Vicente O Moratalla | 6-4,6-2 |