Stadium: Court 2 Round: 25 Ground: Hardcourt indoor
| ITF - M15 Sharm-el-Sheikh | 2021/11/17 08:00 | Petr Hajek v Francesco Vilardo | 3-6,0-6 |
| ITF - M15 Sharm-el-Sheikh | 2021/11/10 10:30 | Timo Stodder v Petr Hajek | 0-6,6-3,6-2 |
| ITF - M15 Sharm-el-Sheikh | 2021/10/10 08:00 | Petr Hajek v Gabriel Decamps | 5-7,7-6,0-6 |
| ITF - M15 Sharm-el-Sheikh | 2021/10/09 08:00 | Lorenzo Bocchi v Petr Hajek | 6-7,4-6 |
| ITF - M15 Sharm-el-Sheikh | 2021/10/08 08:00 | S D Prajwal Dev v Petr Hajek | 5-7,2-6 |
| ITF - M15 Sharm-el-Sheikh | 2021/10/07 08:00 | Petr Hajek v Nitin Kumar Sinha | 6-3,6-7,6-4 |
| ITF - M15 Sharm-el-Sheikh | 2021/10/06 10:10 | Lukas Pokorny v Petr Hajek | 4-6,6-7 |
| UTR Pro Tennis Series - Říčany | 2021/09/18 09:00 | Petr Hajek v Andrew Paulson | 4-6,1-6 |
| ITF M15 - Ostrava | 2021/11/22 10:35 | Milos Karol v Dominik Kellovsky | 6-7,3-6 |
| ITF M15 - Ostrava | 2021/11/21 11:00 | Milos Karol v Krystof Zapsky | 6-4,7-6 |
| ITF M15 - Opava | 2021/11/19 09:00 | Savriyan Danilov v Milos Karol | 6-7,6-3,7-6 |
| ITF M15 - Opava | 2021/11/18 11:55 | Boris Butulija v Milos Karol | 4-6,6-4,3-6 |
| Challenger - Bratislava | 2021/11/10 13:50 | Milos Karol v Lukas Lacko | 4-6,3-6 |
| Challenger - Bratislava | 2021/11/08 11:50 | Milos Karol v Alexander Shevchenko | 7-6,6-4 |
| Challenger - Bratislava | 2021/11/07 14:35 | Ergi Kirkin v Milos Karol | 1-6,6-7 |
| ITF - M25 Praag | 2021/10/07 14:05 | Tobias Simon v Milos Karol | 6-4,4-6,7-6 |