| UTR Pro - Olomouc | 2023/09/12 09:00 | Robert Rumler v Matthew William Donald | 2-6,0-6 |
| UTR Pro - Olomouc | 2023/09/11 06:00 | Robert Rumler v Petr Michnev | 1-6,4-6 |
| ITF - M25 Maribor | 2023/08/30 12:00 | Robert Rumler v Nicolas Zanellato | 0-6,2-6 |
| ITF - M25 Maribor | 2023/08/29 10:55 | Robert Rumler v Maks Meh | 1-6,6-0,10-6 |
| ITF - M25 Maribor | 2023/08/28 11:25 | Robert Rumler v Marko Novak | 6-1,6-3 |
| UTR Pro - Olomouc | 2023/07/08 08:06 | Dominik Suc v Robert Rumler | 6-4,7-6 |
| UTR Pro - Olomouc | 2023/07/07 06:00 | Alessandro-D Ventre v Robert Rumler | 6-3,2-6,4-5 |
| UTR Pro - Olomouc | 2023/07/06 10:00 | Jan Jermar v Robert Rumler | 6-3,6-4 |
| UTR Pro - Olomouc | 2023/09/12 06:00 | Petr Michnev v Sergo Sikharulidze | 6-1,5-2 |
| UTR Pro - Sofia | 2023/09/10 05:00 | Sergo Sikharulidze v Anthony Turchi | 4-6,6-2,5-1 |
| UTR Pro - Sofia | 2023/09/09 09:30 | Sergo Sikharulidze v Mihail Ivanov | 6-2,4-6,5-3 |
| UTR Pro - Sofia | 2023/09/08 05:00 | Sergo Sikharulidze v Christos Keisidis | 2-6,3-6 |
| UTR Pro - Sofia | 2023/09/06 05:00 | Sergo Sikharulidze v Milen Ianakiev | 6-4,4-6,2-6 |
| UTR Pro - Sofia | 2023/09/05 09:02 | Sergo Sikharulidze v Gabriel Donev | 0-6,3-6 |
| UTR Pro - Sofia | 2023/09/04 05:00 | Janos Fekete v Sergo Sikharulidze | 6-2,6-2 |
| ITF - M25 Most | 2023/05/21 08:00 | Sergo Sikharulidze v Lukas Janousek | 3-6,4-6 |