Stadium: Court 2 Round: 14 Ground: Hardcourt outdoor
| Challenger Liberec | 2021/08/02 09:30 | Alexander Ritschard v Artem Dubrivnyy | 6-2,6-2 |
| Challenger Liberec | 2021/08/01 15:10 | Artem Dubrivnyy v Kyrian Jacquet | 6-4,6-0 |
| Challenger Trieste | 2021/07/25 10:30 | Artem Dubrivnyy v Nerman Fatic | 2-6,1-6 |
| Challenger Nur-Sultan | 2021/07/20 07:20 | Artem Dubrivnyy v Peter Polansky | 5-7,6-7 |
| Challenger Nur-Sultan | 2021/07/19 04:00 | Artem Dubrivnyy v Vladyslav Manafov | 6-2,7-6 |
| Challenger Nur-Sultan Qual | 2021/07/18 06:35 | Artem Dubrivnyy v Timur Khabibulin | 6-2,6-4 |
| Challenger Nur-Sultan | 2021/07/13 05:30 | Artem Dubrivnyy v Jay Clarke | 5-7,6-7 |
| Challenger Nur-Sultan | 2021/07/12 04:00 | Edan Leshem v Artem Dubrivnyy | 6-7,6-7 |
| Challenger Warsaw | 2021/08/23 09:00 | Christopher Heyman v Daniel Michalski | 5-7,3-6 |
| Challenger Warsaw | 2021/08/22 09:00 | Christopher Heyman v Patrik Niklas-Salminen | 6-1,6-3 |
| ITF M25 Koksijde | 2021/08/20 10:35 | Mathieu Perchicot v Christopher Heyman | 6-4,6-4 |
| ITF M25 Koksijde | 2021/08/19 08:00 | Christopher Heyman v Aidan Mchugh | 7-6,6-4 |
| ITF M25 Koksijde | 2021/08/17 08:00 | Christopher Heyman v Tom Pisane | 6-0,6-3 |
| ITF M25 Koksijde | 2021/08/16 11:15 | Christopher Heyman v Max Cunat | 6-2,6-2 |
| ITF M25 Wetzlar | 2021/08/08 10:00 | Peter Heller v Christopher Heyman | 6-4,6-7,6-4 |
| ITF M25 Wetzlar | 2021/08/07 14:10 | Harold Mayot v Christopher Heyman | 3-6,6-7 |