Stadium: Court 7 Round: 62 Ground: Clay
| ITF M25 Most | 2021/05/26 10:45 | Matyas Cerny v Franco Agamenone | 0-6,0-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 08:30 | Matyas Cerny v Kai Lemstra | 3-6,3-6 |
| ITF M25 Prague | 2021/05/09 10:00 | Filip Peliwo v Matyas Cerny | 6-3,6-4 |
| ITF M25 Prague | 2020/09/13 12:00 | Matyas Cerny v Inigo C Huegun | 3-6,1-6 |
| ITF M15 Monastir | 2019/12/15 08:00 | Matyas Cerny v Aloys J W Van Baal | 1-6,0-6 |
| ITF M15 Monastir Qual | 2019/12/08 08:30 | Alessandro Coppini v Matyas Cerny | 7-6,6-3 |
| ITF M15 Monastir | 2019/12/01 10:00 | Matyas Cerny v Mousa Alkotop | 1-6,1-6 |
| ITF M15 Opava | 2019/10/29 11:50 | Gibril Diarra v Matyas Cerny | 6-3,6-1 |
| ITF M25 Telfs | 2021/07/16 10:00 | Kirill Kivattsev v Ondrej Horak | 6-2,6-2 |
| ITF M25 Telfs | 2021/07/14 07:55 | George Botezan v Ondrej Horak | 6-4,2-6,5-7 |
| ITF M25 Telfs | 2021/07/13 07:30 | Neil Oberleitner v Ondrej Horak | 4-6,4-6 |
| ITF M25 Telfs | 2021/07/12 07:55 | Ondrej Horak v Samuel Puskar | 6-3,6-4 |
| ITF M25 Wroclaw | 2021/06/28 10:00 | Daniel Dutra Da Silva v Ondrej Horak | 3-6,0-6 |
| ITF M15 Skopje | 2021/06/07 08:30 | Leonid Sheyngezikht v Ondrej Horak | 6-0,7-5 |
| ITF M15 Skopje | 2021/06/06 09:00 | Ondrej Horak v Luigi Sorrentino | 6-0,1-6,11-9 |
| ITF M15 Skopje | 2021/05/30 09:30 | Ondrej Horak v Viktor Jovic | 4-6,3-6 |