Stadium: Court 8 Round: 62 Ground: Clay
| ITF Czech Republic F6 | 2018/07/09 09:25 | Jan Jermar v Petr Hajek | 2-6,1-6 |
| ITF M15 - Sharm El Sheikh | 2021/03/25 09:35 | Petr Hajek v Yu Hsiou Hsu | 3-6,2-6 |
| ITF M15 - Sharm El Sheikh | 2021/03/24 08:50 | Giorgio Ricca v Petr Hajek | 6-7,7-5,1-6 |
| ITF M15 - Sharm El Sheikh | 2021/03/23 11:35 | Petr Hajek v Karlo Cubelic | 7-6,6-2 |
| ITF M15 - Sharm El Sheikh | 2021/03/22 07:30 | Petr Hajek v Emmanuel Luria | 6-3,6-1 |
| ITF M15 - Sharm El Sheikh | 2021/03/21 07:00 | Petr Hajek v Yaron Guberman | 4-6,6-1,10-5 |
| ITF M15 - Sharm El Sheikh | 2021/03/17 07:30 | Petr Hajek v Jacopo Berrettini | 6-7,5-7 |
| ITF M15 - Sharm El Sheikh | 2021/03/16 09:15 | Petr Hajek v Jack Gibbens | 6-1,6-0 |
| ITF M15 - Sharm El Sheikh | 2021/03/15 13:00 | Petr Hajek v Leonardo Malgaroli | 6-3,6-2 |
| ITF M15 - Sharm El Sheikh | 2021/04/05 10:00 | Sean Hodkin v Jan Jermar | 7-5,6-2 |
| ITF M15 - Sharm El Sheikh | 2021/04/04 07:30 | Shahar Gabay v Jan Jermar | 1-6,1-6 |
| ITF M15 - Sharm El Sheikh | 2021/03/28 17:30 | Matej Galik v Jan Jermar | 6-0,6-1 |
| ITF M15 - Sharm El Sheikh | 2021/03/22 11:30 | Jan Jermar v Sebastian Eguez | 5-7,7-6,8-10 |
| ITF M15 - Sharm El Sheikh | 2021/03/21 14:30 | Jan Jermar v Zakai Stone | 6-1,6-2 |
| ITF M15 - Bratislava | 2021/03/08 15:00 | Jan Jermar v Constantin Bittoun Kouzmine | 6-7,2-6 |
| ITF M15 - Bratislava | 2021/03/01 15:00 | Jan Jermar v Yvo Panak | 2-6,1-6 |
| ITF M25 - Poznan | 2020/08/24 12:30 | Oscar Weightman v Jan Jermar | 6-2,6-2 |