Stadium: Madrid Arena Round: 3
| ATP Toronto - Herredouble | 2021/08/10 18:50 | Polansky/Schnur v Bolelli/Gonzalez | 4-6,1-6 |
| Challenger Lexington - Mixeddouble | 2021/07/30 00:30 | Polansky/Schnur v Draxl/Kozlov | 4-6,6-3,7-10 |
| Challenger Lexington - Mixeddouble | 2021/07/28 20:00 | Doumbia/Reboul v Polansky/Schnur | 6-2,6-7,6-10 |
| Challenger Ostrava - Herredouble | 2021/04/28 14:30 | Balaji/Nedunchezhiyan v Polansky/Schnur | 6-3,6-3 |
| Challenger Tallahassee - Herredouble | 2021/04/20 22:50 | Ebden/Novikov v Polansky/Schnur | 6-3,6-3 |
| Challenger Nur-Sultan - Herredouble | 2021/03/04 08:50 | Polansky/Schnur v Lomakin/Manafov | 6-3,6-2 |
| Challenger Nur-Sultan - Herredouble | 2021/03/03 07:30 | Polansky/Schnur v Fomin/Tashbulatov | 6-2,7-6 |
| Challenger Nur-Sultan - Herredouble | 2021/02/25 11:30 | Istomin/Yevseyev v Polansky/Schnur | 6-0,6-3 |
| Davis Cup | 2021/11/27 13:05 | Golubev/Nedovyesov v Goransson/Lindstedt | 6-3,6-3 |
| ATP Sofia - Herredouble | 2021/09/29 10:40 | Golubev/Nedovyesov v Brkic/Cacic | 3-6,7-6,7-10 |
| ATP Nur-Sultan - Herredouble | 2021/09/23 14:20 | Arneodo/Bonzi v Golubev/Nedovyesov | 6-4,4-6,10-7 |
| ATP Nur-Sultan - Herredouble | 2021/09/21 14:40 | Duckworth/Ebden v Golubev/Nedovyesov | 6-7,2-6 |
| ATP Hamburg - Herredouble | 2021/07/16 15:00 | Golubev/Nedovyesov v Puetz/Venus | 3-6,4-6 |
| ATP Hamburg - Herredouble | 2021/07/15 10:30 | Behar/Escobar v Golubev/Nedovyesov | 4-6,4-6 |
| ATP Hamburg - Herredouble | 2021/07/14 10:30 | Golubev/Nedovyesov v Brkic/Cacic | 6-3,7-6 |
| Challenger Zagreb - Herredouble | 2021/05/15 10:25 | Golubev/Nedovyesov v King/Reese | 2-6,6-7 |