Stadium: Center Court Round: 28 Ground: Hardcourt outdoor
| Challenger Nur-Sultan MD | 2021/07/22 10:50 | Polansky/Stakhovsky v Khabibulin/Zhukayev | 6-4,6-2 |
| Challenger Nur-Sultan MD | 2021/07/17 12:10 | Polansky/Stakhovsky v Hsu/Lock | 6-2,1-6,7-10 |
| Challenger Nur-Sultan MD | 2021/07/16 11:15 | Polansky/Stakhovsky v Bega/Denolly | 3-6,6-4,10-8 |
| Challenger Nur-Sultan MD | 2021/07/15 10:00 | Polansky/Stakhovsky v Chung/Sultanov | 6-2,6-3 |
| Challenger Nur-Sultan MD | 2021/07/14 10:00 | Polansky/Stakhovsky v Dubrivnyy/Lomakin | 6-4,3-6,10-6 |
| Challenger Nur-Sultan MD | 2021/07/22 09:45 | Krutykh/Lomakin v Ozernoy/Tashbulatov | 6-2,6-1 |
| Challenger Nur-Sultan MD | 2021/07/21 11:15 | Dubrivnyy/Yevseyev v Krutykh/Lomakin | 3-6,2-6 |