| ITF M15 Heraklion | 2021/06/06 07:30 | Petr Hajek v Ioannis Papounidis | 4-6,7-5,6-10 |
| ITF M15 Heraklion | 2021/05/31 06:30 | Petr Hajek v Toby D. Boyer | 4-6,7-6,6-10 |
| ITF M15 Heraklion | 2021/05/30 09:00 | Petr Hajek v Areg Stepanian | 7-5,6-2 |
| ITF M15 Heraklion | 2021/05/23 10:00 | Petr Hajek v Menelaos Efstathiou | 3-6,2-6 |
| ITF M15 Heraklion | 2021/05/17 07:00 | Petr Hajek v Evangelos Kypriotis | 6-4,0-6,8-10 |
| ITF M15 Sibenik | 2021/04/20 09:15 | Petr Hajek v Marino Jakic | 6-4,4-6,1-10 |
| ITF M15 Sibenik | 2021/04/19 10:35 | Petr Hajek v Giulio Colacioppo | 6-0,6-2 |
| ITF M15 Sibenik | 2021/04/18 10:00 | Petr Hajek v Jan Jermar | 6-2,6-1 |
| Challenger Prostejov | 2021/06/14 14:20 | Andrew Paulson v Hugo Dellien | 1-6,3-6 |
| ITF M25 Most | 2021/05/27 07:55 | Gijs Brouwer v Andrew Paulson | 6-2,2-6,7-6 |
| ITF M25 Most | 2021/05/26 09:50 | Andrew Paulson v Christian Lindell | 6-2,6-3 |
| ITF M25 Jablonec Nad Nisou | 2021/05/21 09:00 | Andrew Paulson v Evan Furness | 0-6,3-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/20 07:55 | Andrew Paulson v Titouan Droguet | 6-4,6-2 |
| ITF M25 Jablonec Nad Nisou | 2021/05/19 08:00 | Jonas Forejtek v Andrew Paulson | 6-2,3-6,1-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/18 07:30 | Andrew Paulson v Kai Lemstra | 6-3,6-4 |
| ITF M25 Jablonec Nad Nisou | 2021/05/17 08:30 | Andrew Paulson v Leon Hoeveler | 6-1,6-2 |