Stadium: Court 3 Round: 25 Ground: Hardcourt indoor
| ITF M15 Kazan | 2021/10/12 11:05 | Daniel Litvinov v Pavel Shchaya-Zubrov | 7-6,6-2 |
| ITF M15 Kazan | 2021/10/11 11:55 | Ilya Lebedev v Pavel Shchaya-Zubrov | 3-6,0-6 |
| ITF M15 Parnu | 2021/08/03 07:00 | Arvid Nordquist v Pavel Shchaya-Zubrov | 6-2,6-3 |
| ITF M15 Parnu | 2021/08/02 07:00 | Robin Erik Parts v Pavel Shchaya-Zubrov | 7-6,3-6,7-10 |
| ITF M15 St Petersburg | 2021/04/12 10:25 | Pavel Shchaya-Zubrov v Constantin Bittoun Kouzmine | 0-6,3-6 |
| ITF M15 St Petersburg Qual | 2021/04/11 15:45 | Alexandr Binda v Pavel Shchaya-Zubrov | 4-6,6-4,9-11 |
| ITF M15 St Petersburg | 2021/04/04 07:00 | Pavel Shchaya-Zubrov v Illya Beloborodko | 2-6,0-6 |
| ITF M15 St Petersburg Qual | 2021/02/07 13:35 | Andrew Paulson v Pavel Shchaya-Zubrov | 6-2,6-2 |
| ITF M15 Kazan | 2021/10/12 07:00 | Aristarkh Safonov v Nikita Ianin | 6-0,6-3 |
| ITF M15 St Petersburg | 2021/04/13 11:30 | Patrik Rikl v Aristarkh Safonov | 6-4,6-2 |
| ITF M15 St Petersburg | 2021/04/09 09:40 | Aristarkh Safonov v Jan Satral | 4-6,2-6 |
| ITF M15 St Petersburg | 2021/04/08 09:00 | Matic Spec v Aristarkh Safonov | 3-6,5-7 |
| ITF M15 St Petersburg | 2021/04/06 07:00 | Alexander Wolfschmidt v Aristarkh Safonov | 6-4,1-6,5-7 |