Stadium: Court 6 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Sharm El Sheikh | 2021/10/06 10:10 | Lukas Pokorny v Petr Hajek | 4-6,6-7 |
| UTR Pro Tennis Series - Říčany | 2021/09/18 09:00 | Petr Hajek v Andrew Paulson | 4-6,1-6 |
| UTR Pro Tennis Series - Říčany | 2021/09/17 12:00 | Stefanos Sakellaridis v Petr Hajek | 6-7,2-6 |
| UTR Pro Tennis Series - Říčany | 2021/09/16 07:00 | Antonin Bolardt v Petr Hajek | 2-6,1-6 |
| UTR Pro Tennis Series - Říčany | 2021/09/15 12:00 | Dominik Recek v Petr Hajek | 7-6,5-3 |
| UTR Pro Tennis Series - Říčany | 2021/09/13 07:30 | Matyas Cerny v Petr Hajek | 1-6,2-6 |
| ITF M15 Bad Waltersdorf | 2021/08/22 09:00 | Petr Hajek v Gabriel Decamps | 6-7,2-6 |
| ITF M15 Warmbad-Villach | 2021/08/18 08:00 | Petr Hajek v Tom Kocevar-Desman | 4-6,7-5,4-6 |
| ITF M15 Sharm El Sheikh | 2021/10/06 09:35 | Nitin Kumar Sinha v Cezar Cretu | 4-6,6-1,6-2 |
| ITF M15 Sharm El Sheikh | 2021/10/05 08:00 | Nitin Kumar Sinha v Nico Jaeger | 6-4,6-0 |
| ITF M15 Sharm El Sheikh | 2021/10/04 08:00 | Nitin Kumar Sinha v Stephanos Schinas | 6-1,6-4 |
| ITF M15 Káhira | 2021/09/29 10:55 | Lorenzo Gagliardo v Nitin Kumar Sinha | 3-6,6-4,6-4 |
| ITF M15 Káhira | 2021/09/28 08:00 | Nitin Kumar Sinha v Roland Stuurman | 2-6,0-6 |
| ITF M15 Káhira | 2021/09/22 13:40 | Billy Harris v Nitin Kumar Sinha | 6-0,7-6 |
| ITF M15 Káhira | 2021/09/21 08:00 | Nitin Kumar Sinha v Sean Hess | 6-4,3-6,10-1 |
| ITF M15 Káhira | 2021/09/13 07:00 | Nitin Kumar Sinha v Adrian Oetzbach | 5-7,6-3,11-13 |