| ITF M25 Ricany | 2021/09/01 08:00 | Matyas Cerny v Stanek, Robin | 7-6,3-6,1-6 |
| ITF M25 Ricany | 2021/08/31 08:00 | Jimmy Yang v Matyas Cerny | 1-6,2-6 |
| ITF M25 Ricany | 2021/08/29 09:00 | Thurner, Dean v Matyas Cerny | 0-6,0-6 |
| Prostejov, Singles M-ITF-CZE-04A | 2021/08/15 09:00 | Matyas Cerny v Panik, Matej | 3-6,5-7 |
| 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 Cervantes, Inigo | 3-6,1-6 |
| ITF M15 Bad Waltersdorf | 2021/08/22 09:00 | Hajek, Petr v Gabriel Decamps | 6-7,2-6 |
| ITF M15 Warmbad-Villach | 2021/08/18 08:00 | Hajek, Petr v Kocevar-Desman, Tom | 4-6,7-5,4-6 |
| ITF M15 Warmbad-Villach | 2021/08/17 08:00 | Hajek, Petr v Ioannis Xilas | 6-3,7-6 |
| ITF M15 Warmbad-Villach | 2021/08/16 12:30 | Hajek, Petr v Valentino, Daniele | 6-3,6-1 |
| ITF M15 Gdynia | 2021/08/12 08:00 | Filip Peliwo v Hajek, Petr | 6-1,6-3 |
| ITF M15 Gdynia | 2021/08/11 12:30 | Hajek, Petr v Maks Kasnikowski | 6-4,6-7,7-5 |
| ITF M15 Gdynia | 2021/08/10 08:00 | Hajek, Petr v Pieczonka, Filip | 5-7,4-6 |
| ITF M15 Gdynia | 2021/08/09 10:30 | Hajek, Petr v Zukauskas, Simonas | 6-0,6-1 |