| UTR Pro Tennis Series Athens | 2022/08/08 05:00 | Christos Keisidis v Tadija Radovanovic | 6-0,3-6,6-4 |
| UTR Pro Tennis Series Athens | 2022/08/04 06:30 | Tadija Radovanovic v Christos Keisidis | 6-2,6-7,1-6 |
| ITF M15 Zlatibor | 2019/09/15 06:30 | Tadija Radovanovic v Christos Keisidis | 2-6,1-6 |
| UTR Pro Beograd | 2023/10/09 12:08 | Stefan Popovic v Tadija Radovanovic | 6-3,7-5 |
| UTR Pro Beograd | 2023/10/08 08:04 | Lazar Vojinovic v Tadija Radovanovic | 6-4,6-3 |
| UTR Pro Beograd | 2023/10/07 08:07 | Gabriel Matuszewski v Tadija Radovanovic | 5-7,6-4,5-7 |
| UTR Pro Beograd | 2023/10/05 06:00 | Tadija Radovanovic v Karlo Kajin | 6-7,6-4,6-2 |
| UTR Pro Beograd | 2023/10/04 12:57 | Vladan Tadic v Tadija Radovanovic | 6-4,6-4 |
| UTR Pro Beograd | 2023/10/03 12:40 | Andrej Nedic v Tadija Radovanovic | 6-3,6-3 |
| UTR Pro Beograd | 2023/10/02 08:43 | Romeo Hadzimehmedovic v Tadija Radovanovic | 6-3,2-6,1-6 |
| UTR Pro Beograd | 2023/10/01 06:00 | Tadija Radovanovic v Renlong Pang | 0-0 |
| UTR Pro Beograd | 2023/10/08 09:00 | Christos Keisidis v Domagoj Biljesko | 4-6,0-6 |
| UTR Pro Beograd | 2023/10/04 08:44 | Christos Keisidis v Ilya Snitari | 2-6,0-6 |
| UTR Pro Beograd | 2023/10/03 07:30 | Christos Keisidis v Drazen Petrovic | 2-6,5-7 |
| UTR Pro Beograd | 2023/10/02 06:00 | Christos Keisidis v Zoran Ludoski | 4-6,6-7 |
| UTR Pro Olomouc | 2023/09/17 07:30 | Mikolaj Lis v Christos Keisidis | 1-6,3-6 |
| UTR Pro Olomouc | 2023/09/16 10:52 | Christos Keisidis v Jakub Novak | 6-4,7-6 |
| UTR Pro Olomouc | 2023/09/15 06:00 | Christos Keisidis v Oleg Prihodko | 1-6,1-6 |
| UTR Pro Olomouc | 2023/09/13 06:00 | Dominik Recek v Christos Keisidis | 6-2,6-1 |