Stadium: Court 3 Round: 29 Ground: Hardcourt outdoor
| ITF M15 Bad Waltersdorf | 2021/08/22 09:00 | Hajek, Petr v Gabriel Decamps | 6-7,2-6 |
| ITF - M15 Sharm El Sheikh | 2021/10/09 08:00 | Lorenzo Bocchi v Hajek, Petr | 6-7,4-6 |
| ITF - M15 Sharm El Sheikh | 2021/10/08 08:00 | S D Prajwal Dev v Hajek, Petr | 5-7,2-6 |
| ITF - M15 Sharm El Sheikh | 2021/10/07 08:00 | Hajek, Petr v Nitin Kumar Sinha | 6-3,6-7,6-4 |
| ITF - M15 Sharm El Sheikh | 2021/10/06 10:10 | Lukas Pokorny v Hajek, Petr | 4-6,6-7 |
| UTR Pro Tennis Series Ricany | 2021/09/18 09:00 | Hajek, Petr v Andrew Paulson | 4-6,1-6 |
| UTR Pro Tennis Series Ricany | 2021/09/17 12:00 | Stefanos Sakellaridis v Hajek, Petr | 6-7,2-6 |
| UTR Pro Tennis Series Ricany | 2021/09/16 07:00 | Bolardt, Antonin v Hajek, Petr | 2-6,1-6 |
| UTR Pro Tennis Series Ricany | 2021/09/15 12:00 | Recek, Dominik v Hajek, Petr | 7-6,5-3 |
| ITF - M15 Sharm El Sheikh | 2021/10/09 08:00 | Nathan Seateun v Gabriel Decamps | 6-4,2-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2021/10/07 10:00 | Gabriel Decamps v Neil Oberleitner | 6-3,6-3 |
| ITF - M15 Sharm El Sheikh | 2021/10/06 14:00 | Lo, Chien Hsun v Gabriel Decamps | 2-6,2-6 |
| ITF - M15 Monastir | 2021/09/19 08:30 | Li Tu v Gabriel Decamps | 6-2,6-1 |
| ITF - M15 Monastir | 2021/09/18 08:30 | Gabriel Decamps v Ryota Tanuma | 7-6,6-3 |
| ITF - M15 Monastir | 2021/09/17 07:55 | Blake Ellis v Gabriel Decamps | 4-6,7-6,3-6 |
| ITF - M15 Monastir | 2021/09/16 08:00 | Gabriel Decamps v Mattia Bellucci | 6-1,6-3 |
| ITF - M15 Monastir | 2021/09/15 08:00 | Takeuchi, Kento (1987) v Gabriel Decamps | 4-6,1-6 |