| ITF M25 Kiseljak | 2021/05/24 11:00 | Tadija Radovanovic v Goran Zivotic | 3-6,6-4,3-10 |
| ITF M25 Pretoria | 2021/09/28 07:00 | Menelaos Efstathiou v Tadija Radovanovic | 6-2,6-1 |
| ITF M25 Pretoria | 2021/09/27 08:40 | Tadija Radovanovic v Leonardo Taddia | 6-2,6-3 |
| ITF M25 Pretoria | 2021/09/26 07:00 | Tadija Radovanovic v Rico Gore | 6-2,6-0 |
| ITF M25 Johannesburg | 2021/09/20 08:15 | Tadija Radovanovic v Sahar Simon | 2-6,2-6 |
| ITF M25 Johannesburg Qual | 2021/09/19 07:00 | Tom Saporta v Tadija Radovanovic | 4-6,5-7 |
| ITF M25 Johannesburg | 2021/09/13 13:25 | Dylan Salton v Tadija Radovanovic | 6-3,6-4 |
| ITF M25 Johannesburg | 2021/09/13 07:30 | Tadija Radovanovic v Boitshepo Maake | 6-1,6-3 |
| ITF M25 Johannesburg | 2021/09/12 09:00 | Tadija Radovanovic v Tom Saporta | 6-3,3-6,10-4 |
| ITF M15 Antalya | 2021/10/17 07:00 | Goran Zivotic v Shunsuke Wakita | 3-6,4-6 |
| ITF M15 Antalya | 2021/10/10 07:00 | Vitek Horak v Goran Zivotic | 6-4,6-4 |
| ITF M15 Pirot | 2021/09/21 12:00 | Nicolas Parizzia v Goran Zivotic | 4-6,6-4,9-11 |
| ITF M15 Pirot | 2021/09/20 09:30 | Stefan Ivic v Goran Zivotic | 3-6,3-6 |
| ITF M15 Zlatibor | 2021/09/13 11:00 | Shunsuke Wakita v Goran Zivotic | 6-1,6-3 |
| ITF M15 Zlatibor | 2021/09/12 11:30 | Danilo Ilic v Goran Zivotic | 0-6,2-6 |
| ITF M15 Novi Sad | 2021/08/01 12:45 | Goran Zivotic v Franco Roncadelli | 0-6,0-6 |
| ITF M15 Novi Sad | 2021/07/25 07:00 | Goran Zivotic v Alen Rogic-Hadzalic | 4-6,4-6 |