| UTR Pro - Olomouc | 2023/09/16 09:00 | Jan Jermar v Mikolaj Lis | 3-6,3-5 |
| UTR Pro - Olomouc | 2023/09/15 07:30 | Sergo Sikharulidze v Mikolaj Lis | 4-6,3-6 |
| UTR Pro - Olomouc | 2023/09/14 11:51 | Robert Rumler v Mikolaj Lis | 6-2,1-6,6-3 |
| UTR Pro - Olomouc | 2023/09/13 06:00 | Petr Michnev v Mikolaj Lis | 6-3,6-1 |
| UTR Pro - Olomouc | 2023/09/11 07:30 | Matthew William Donald v Mikolaj Lis | 6-1,5-3 |
| ITF - M15 Koszalin | 2023/09/06 09:40 | Mikolaj Lis v Mateusz Terczynski | 1-6,3-6 |
| ITF - M15 Koszalin | 2023/09/05 10:40 | Mikolaj Lis v Michal Matuszewski | 6-0,7-5 |
| ITF - M15 Koszalin | 2023/09/04 12:00 | Mikolaj Lis v William Rejchtman Vinciguerra | 4-6,6-3,10-5 |
| 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 |
| 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 |