Ground: Carpet indoor
| UTR Pro Beograd | 2023/10/11 07:30 | Stefan Popovic v Christos Keisidis | 6-3,6-2 |
| UTR Pro Beograd | 2023/10/10 12:40 | Tadija Radovanovic v Christos Keisidis | 4-6,3-6 |
| 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 |