Stadium: Court 4 Round: 62 Ground: Clay
| ITF M15 Nyiregyhaza | 2024/06/16 10:00 | Edoardo Cherie Ligniere v Ondrej Horak | 6-0,6-2 |
| ITF M15 Nyiregyhaza | 2024/06/12 07:00 | Andriy Poritskyy v Ondrej Horak | 7-5,6-4 |
| Czech Republic Extraliga | 2023/12/15 10:00 | Jakub Mensik v Ondrej Horak | 6-4,6-3 |
| ITF M15 Santo Domingo | 2023/11/15 14:30 | Marcel Kamrowski v Ondrej Horak | 6-4,6-2 |
| ITF M15 Santo Domingo | 2023/11/14 12:55 | Ondrej Horak v Paul Spencer | 6-1,6-2 |
| ITF M15 Santo Domingo | 2023/11/13 15:00 | Ondrej Horak v Matvey Greschner | 6-3,6-1 |
| ITF M15 Santo Domingo | 2023/11/09 18:00 | Ondrej Horak v Bruno Kuzuhara | 6-3,6-7,6-7 |
| ITF M15 Santo Domingo | 2023/11/08 16:30 | Marcel Kamrowski v Ondrej Horak | 5-7,0-6 |
| ITF M15 Umag | 2024/07/07 13:00 | Radim Paral v Guelord Kayombo | 6-1,6-3 |
| Czech Republic Extraliga | 2023/12/14 10:30 | Vojtech Vlkovsky v Radim Paral | 6-3,6-1 |
| Czech Extraliga | 2022/12/11 10:33 | Ondrej Kratochvil v Radim Paral | 5-7,7-5,6-4 |