| UTR Pro Olomouc | 2023/07/05 06:00 | Jan Jermar v Alessandro-D Ventre | 6-2,0-6,3-6 |
| UTR Pro Olomouc | 2023/07/04 08:43 | Jan Jermar v Maxwell Benson | 6-2,6-3 |
| UTR Pro Olomouc | 2023/07/03 06:48 | Jan Jermar v Jonasz Dziopak | 6-7,6-4,3-6 |
| ITF M15 Casablanca | 2023/06/18 14:30 | Jan Jermar v Othman Bezzaz | 7-6,5-7,7-10 |
| Challenger Ostrava | 2023/04/23 12:15 | Henri Squire v Jan Jermar | 6-2,6-4 |
| ITF M25 Faro | 2023/02/20 11:35 | Jan Jermar v Fabio Coelho | 2-6,1-6 |
| ITF M25 Faro | 2023/02/19 13:00 | Manuel Almeida v Jan Jermar | 0-6,2-6 |
| ITF M25 Vila Real de Santo Antonio | 2023/02/13 09:30 | Benjamin Winter Lopez v Jan Jermar | 6-1,6-2 |
| UTR Pro Olomouc | 2023/07/05 07:30 | Jonasz Dziopak v Robert Rumler | 1-6,6-7 |
| UTR Pro Olomouc | 2023/07/03 06:48 | Maxwell Benson v Robert Rumler | 5-7,6-7 |
| ITF M25 Most | 2023/05/24 11:20 | Robert Rumler v Stuart Parker | 6-3,6-7,1-6 |
| ITF M25 Most | 2023/05/23 08:00 | Robert Rumler v Stepan Pecak | 6-1,6-3 |
| ITF M25 Most | 2023/05/22 09:00 | Filip Duda v Robert Rumler | 2-6,3-6 |
| ITF M25 Most | 2023/05/21 08:00 | Josef Vagner v Robert Rumler | 0-6,1-6 |
| UTR Pro Tennis Series - Slovinsko | 2022/06/11 06:00 | Robert Rumler v Volodymyr Uzhylovskyi | 6-3,6-3 |
| UTR Pro Tennis Series - Slovinsko | 2022/06/10 13:00 | Nicholas Campbell v Robert Rumler | 3-6,1-5 |