Stadium: Court 5 Round: 62 Ground: Clay
| ITF M25 Jablonec Nad Nisou | 2021/05/16 07:30 | Beran, Jakub v Gianluca Coloma-Heck | 6-4,6-7,5-10 |
| ITF M25 Prague | 2021/05/11 08:00 | Safranek, Vaclav v Beran, Jakub | 6-2,6-2 |
| ITF M25 Prague | 2021/05/09 08:30 | Daniel Siniakov v Beran, Jakub | 5-7,4-6 |
| ITF M25 Jablonec Nad Nisou | 2019/05/20 09:00 | Lukas Klein v Beran, Jakub | 6-0,6-1 |
| ITF Czech Republic F3 Qual | 2018/05/26 09:00 | Recek, Dominik v Beran, Jakub | 6-2,6-3 |
| ITF Czech Republic F2 Qual | 2018/05/21 09:45 | Rikl, Patrik v Beran, Jakub | 6-3,6-3 |
| ITF Czech Republic F2 Qual | 2018/05/20 09:00 | Cernoch, Brian v Beran, Jakub | 6-7,4-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/17 07:30 | Jan Jermar v Kai Lemstra | 4-6,4-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 08:30 | Jan Jermar v Samosi, Peter | 7-6,6-0 |
| ITF M25 Prague | 2021/05/09 10:00 | Ondrej Horak v Jan Jermar | 7-6,6-3 |
| ITF M15 Las Palmas | 2021/04/25 11:00 | Jan Jermar v Gabarro, Xavier | 0-6,2-6 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/04/18 10:00 | Hajek, Petr v Jan Jermar | 6-2,6-1 |
| 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 | Gabay, Shahar v Jan Jermar | 1-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/28 17:30 | Galik, Matej v Jan Jermar | 6-0,6-1 |