Stadium: Court 11 Round: 19 Ground: Clay
| Challenger Kyiv | 2021/09/05 08:00 | Alex Rybakov v Nikita Mashtakov | 6-2,6-2 |
| Challenger Prague | 2021/08/25 12:25 | Michael Geerts v Alex Rybakov | 6-2,6-2 |
| Challenger Prague | 2021/08/24 10:15 | Johannes Haerteis v Alex Rybakov | 4-6,2-6 |
| Challenger Prague | 2021/08/23 08:00 | Nick Hardt v Alex Rybakov | 6-7,3-6 |
| Challenger Prague | 2021/08/22 08:00 | Marek Gengel v Alex Rybakov | 5-7,1-6 |
| ITF M25 Prostejov | 2021/08/20 08:00 | Nikolas Sanchez Izquierdo v Alex Rybakov | 6-3,6-2 |
| ITF M25 Prostejov | 2021/08/19 08:15 | Alex Rybakov v Nick Chappell | 6-2,7-6 |
| ITF M25 Prostejov | 2021/08/18 07:55 | Alex Rybakov v Marek Gengel | 6-3,6-3 |
| Challenger Kyiv | 2021/09/05 08:00 | Aleksandr Braynin v Alexandar Lazarov | 7-6,6-4 |
| ITF M15 Chornomorsk | 2021/09/02 09:50 | Aleksandr Braynin v Ilya Snitari | 6-2,1-6,2-6 |
| ITF M15 Chornomorsk | 2021/09/01 07:00 | Vladyslav Manafov v Aleksandr Braynin | 6-7,6-7 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/18 06:00 | Aleksandr Braynin v Yanais Laurent | 6-3,5-0 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/17 07:30 | Aleksandr Braynin v Dian Nedev | 6-3,6-2 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/16 06:00 | Gorazd Srbljak v Aleksandr Braynin | 6-4,3-6,6-3 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/15 09:00 | Vladimir Popov v Aleksandr Braynin | 4-6,5-7 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/14 07:30 | Vasil Kirkov v Aleksandr Braynin | 7-5,5-1 |