| ITF M25 Ceska Lipa | 2025/06/10 10:23 | Jan Kumstat v Vladyslav Orlov | 7-6,6-2 |
| ITF M15 Szentendre | 2025/05/16 09:00 | Dominik Kellovsky v Jan Kumstat | 6-3,3-6,6-1 |
| ITF M15 Szentendre | 2025/05/15 08:00 | Jan Kumstat v Attila Dominik Boros | 6-4,7-5 |
| ITF M15 Szentendre | 2025/05/14 08:00 | Bruno Fernandez v Jan Kumstat | 4-6,6-7 |
| Challenger Prague | 2025/05/06 12:45 | Jan Kumstat v Filip Misolic | 4-6,5-7 |
| Challenger Prague | 2025/05/05 10:35 | Jan Kumstat v Alex Martinez | 6-4,1-6,6-4 |
| Challenger Prague | 2025/05/04 10:30 | Henri Squire v Jan Kumstat | 7-5,6-7,1-6 |
| Challenger Ostrava | 2025/05/01 12:15 | Jan Kumstat v Zsombor Piros | 3-6,3-6 |
| ITF M25 Ceska Lipa | 2025/06/11 12:20 | Juan Pablo Paz v Martin Krumich | 2-6,3-6 |
| ITF M25 Belgrade | 2025/06/04 11:57 | Eric Vanshelboim v Martin Krumich | 6-4,6-3 |
| ITF M25 Satu Mare | 2025/05/29 13:00 | Martin Krumich v Niklas Guttau | 6-2,4-6,6-7 |
| ITF M25 Satu Mare | 2025/05/28 09:02 | Martin Krumich v Andrei Corneliu Gadoiu | 6-0,6-0 |
| Challenger Skopje | 2025/05/19 08:30 | Manas Manoj Dhamne v Martin Krumich | 6-3,7-5 |
| Challenger Skopje | 2025/05/18 11:55 | Martin Krumich v Matthew Dellavedova | 6-4,6-2 |
| Challenger Zagreb | 2025/05/12 10:50 | Dimitar Kuzmanov v Martin Krumich | 6-4,6-3 |
| Challenger Zagreb | 2025/05/11 12:10 | Matei Todoran v Martin Krumich | 1-6,1-6 |