| UTR Pro Tennis Series - Atenas | 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 Tennis Series - Atenas | 2022/08/07 06:30 | Christos Keisidis v Paris Gemouchidis | 6-2,5-3 |
| UTR Pro Tennis Series - Atenas | 2022/08/04 06:30 | Tadija Radovanovic v Christos Keisidis | 6-2,6-7,1-6 |
| UTR Pro Tennis Series - Atenas | 2022/08/03 05:00 | Janos Fekete v Christos Keisidis | 6-3,2-6,7-5 |
| UTR Pro Tennis Series - Atenas | 2022/08/01 09:30 | Aristotelis Thanos v Christos Keisidis | 6-1,6-2 |
| UTR Pro Tennis Series - Mülheim | 2022/07/03 06:00 | Andre Rodeia v Christos Keisidis | 6-3,7-6 |
| UTR Pro Tennis Series - Mülheim | 2022/07/02 10:30 | Aaron James Williams v Christos Keisidis | 6-4,2-6,2-5 |
| UTR Pro Tennis Series - Mülheim | 2022/07/01 10:30 | Christos Keisidis v Hugo Pierre | 3-6,5-7 |
| UTR Pro Tennis Series - Mülheim | 2022/06/30 09:00 | Christos Keisidis v Jose L V G-Carpintero | 6-1,5-1 |
| UTR Pro Tennis Series - Atenas | 2022/08/07 05:00 | Joe Leather v Tadija Radovanovic | 2-6,6-4,3-6 |
| UTR Pro Tennis Series - Atenas | 2022/08/06 05:00 | Stephanos Schinas v Tadija Radovanovic | 1-6,1-6 |
| UTR Pro Tennis Series - Atenas | 2022/08/04 06:30 | Tadija Radovanovic v Christos Keisidis | 6-2,6-7,1-6 |
| UTR Pro Tennis Series - Atenas | 2022/08/02 06:00 | Tadija Radovanovic v Aristotelis Thanos | 1-6,4-6 |
| UTR Pro Tennis Series - Atenas | 2022/08/01 09:30 | Tadija Radovanovic v Janos Fekete | 2-6,4-6 |
| ITF - M15 Sófia | 2022/07/03 10:30 | Tadija Radovanovic v Stefan Micov | 3-6,3-6 |
| ITF - M15 Belgrado | 2022/06/26 08:15 | Tadija Radovanovic v Egor Novikov | 2-6,6-4,7-10 |
| ITF - M15 Budva | 2022/06/06 11:10 | Tadija Radovanovic v Maxim Krapivin | 6-2,4-6,8-10 |