Stadium: Court 2 Round: 25 Ground: Hardcourt indoor
| ITF Slovakia F1 | 2018/07/24 10:20 | Hajek, Petr v Petr Michnev | 4-6,6-4,1-6 |
| ITF - M15 Sharm El Sheikh | 2021/11/17 08:00 | Hajek, Petr v Vilardo, Francesco | 3-6,0-6 |
| ITF - M15 Sharm El Sheikh | 2021/11/10 10:30 | Timo Stodder v Hajek, Petr | 0-6,6-3,6-2 |
| ITF - M15 Sharm El Sheikh | 2021/10/10 08:00 | Hajek, Petr v Gabriel Decamps | 5-7,7-6,0-6 |
| 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 Paulson, Andrew | 4-6,1-6 |
| ITF M25 Wroclaw | 2021/06/30 09:30 | Orlando Luz v Petr Michnev | 6-2,6-4 |
| ITF M25 Wroclaw | 2021/06/29 08:00 | Alibek Kachmazov v Petr Michnev | 6-4,3-6,7-10 |
| ITF M25 Wroclaw | 2021/06/28 09:40 | Taiyo Yamanaka v Petr Michnev | 5-7,2-6 |
| ITF M25 Wroclaw | 2021/06/27 12:30 | Hoeveler, Leon v Petr Michnev | 2-6,1-6 |
| ITF M15 Skopje | 2021/06/08 07:30 | Petr Michnev v Leonid Sheyngezikht | 6-2,2-6,10-6 |
| ITF M15 Skopje | 2021/06/07 10:00 | Petr Michnev v Aleksic, Mario | 6-2,6-2 |
| ITF M15 Skopje | 2021/06/03 08:00 | Zekic, Miljan v Petr Michnev | 6-2,7-5 |
| ITF M15 Skopje | 2021/06/02 08:00 | Joncour, Ronan v Petr Michnev | 2-6,4-6 |