Stadium: Court 1 Round: 26 Ground: Clay
| ITF M15 Zlatibor | 2021/09/15 08:00 | Obrad Markovski v Domagoj Biljesko | 5-7,6-4,2-6 |
| ITF M15 Bad Waltersdorf | 2021/09/01 13:35 | Domagoj Biljesko v David Pichler | 2-6,6-7 |
| ITF M15 Bad Waltersdorf | 2021/08/31 07:00 | Domagoj Biljesko v Hasan Ibrahim | 6-2,6-0 |
| 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 Kristijan Juhas | 7-5,6-4 |
| ITF M15 Zlatibor | 2021/09/15 11:05 | Michal Novansky v Oleg Prihodko | 3-6,4-6 |
| ITF M15 Chornomorsk | 2021/09/03 07:00 | Denis Yevseyev v Oleg Prihodko | 6-3,7-6 |
| ITF M15 Chornomorsk | 2021/09/02 09:55 | Tommaso Compagnucci v Oleg Prihodko | 0-6,6-7 |
| ITF M15 Chornomorsk | 2021/08/31 08:35 | Vlad Andrei Dancu v Oleg Prihodko | 3-6,1-6 |
| ITF M25 Bacau | 2021/08/17 11:15 | Pedro Sakamoto v Oleg Prihodko | 6-3,6-1 |
| 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 |