Ground: Carpet indoor
| UTR Pro Olomouc | 2023/07/05 08:05 | Christos Keisidis v Oleg Prihodko | 2-6,1-6 |
| UTR Pro Olomouc | 2023/09/13 06:00 | Dominik Recek v Christos Keisidis | 6-2,6-1 |
| UTR Pro Sofia | 2023/09/09 08:00 | Vardan Manukyan v Christos Keisidis | 0-4 |
| UTR Pro Sofia | 2023/09/08 05:00 | Sergo Sikharulidze v Christos Keisidis | 2-6,3-6 |
| UTR Pro Sofia | 2023/09/07 06:30 | Gabriel Donev v Christos Keisidis | 6-3,6-2 |
| UTR Pro Sofia | 2023/09/05 07:42 | Janos Fekete v Christos Keisidis | 6-0,6-1 |
| UTR Pro Sofia | 2023/09/04 07:04 | Christos Keisidis v Milen Ianakiev | 3-6,5-7 |
| UTR Pro Olomouc | 2023/07/09 06:00 | Christos Keisidis v Adam Jurajda | 6-4,6-2 |
| UTR Pro Olomouc | 2023/07/08 09:47 | Bekkhan Atlangeriev v Christos Keisidis | 2-6,1-6 |
| UTR Pro Olomouc | 2023/09/14 07:30 | Dominik Recek v Oleg Prihodko | 6-4,5-7,0-6 |
| UTR Pro Olomouc | 2023/09/13 09:30 | Marek Rehacek v Oleg Prihodko | 2-6,1-6 |
| Challenger Tulln | 2023/09/03 12:40 | Blaz Rola v Oleg Prihodko | 6-3,6-2 |
| Challenger Prague | 2023/08/20 13:20 | Federico Agustin Gomez v Oleg Prihodko | 6-4,4-6,6-4 |
| Challenger Banja Luka | 2023/08/07 09:30 | Marko Topo v Oleg Prihodko | 6-7,6-2,6-4 |
| Challenger Liberec | 2023/07/30 10:50 | Toby Alex Kodat v Oleg Prihodko | 6-4,6-4 |
| ITF M25 Bacau | 2023/07/28 07:00 | Hernan Casanova v Oleg Prihodko | 3-6,6-3,7-6 |
| ITF M25 Bacau | 2023/07/27 09:45 | Valentin Vanta v Oleg Prihodko | 3-6,6-2,2-6 |