Stadium: Court 4 Round: 44 Ground: Clay
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Alexander Zgirovsky v Inaki Cabrera Bello | 6-0,6-4 |
| ITF M15 Novomoskovsk | 2021/05/25 08:45 | Gabriel Donev v Alexander Zgirovsky | 6-4,6-2 |
| ITF M15 Novomoskovsk | 2021/05/24 12:00 | Olexiy Kolisnyk v Alexander Zgirovsky | 7-6,2-6,8-10 |
| ITF M15 Novomoskovsk | 2021/05/23 08:00 | Egor Matvievici v Alexander Zgirovsky | 1-6,3-6 |
| ITF M15 St Petersburg | 2021/04/12 08:30 | Daniil Glinka v Alexander Zgirovsky | 7-6,7-6 |
| ITF M15 St Petersburg Qual | 2021/04/11 11:00 | Leonid Sheyngezikht v Alexander Zgirovsky | 6-4,4-6,4-10 |
| ITF M15 St Petersburg | 2021/04/04 13:40 | Igor Trunov v Alexander Zgirovsky | 1-6,6-3,10-7 |
| ITF M15 Kazan | 2021/03/09 06:55 | Alexander Zgirovsky v Pavel Verbin | 6-4,6-7,6-10 |
| ITF M15 Skopje | 2021/05/30 12:30 | Dmitrii Vasilev v Samuele Pieri | 4-6,4-6 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Tommaso Vescovi v Dmitrii Vasilev | 6-7,5-7 |
| ITF M15 Novomoskovsk | 2021/05/23 08:00 | Michal Mikula v Dmitrii Vasilev | 6-1,6-3 |
| ITF M15 Antalya | 2021/05/17 07:00 | Dmitrii Vasilev v Daisuke Sumizawa | 6-7,4-6 |
| ITF M15 Antalya | 2021/05/16 07:00 | Dmitrii Vasilev v Essa Qabazard | 4-6,7-6,10-3 |
| ITF M15 Sharm El Sheikh | 2021/02/21 15:30 | Andres Gabriel Ciurletti v Dmitrii Vasilev | 7-5,6-0 |
| UTR Pro Tennis Series Barcelona | 2021/01/30 09:30 | Francesco Vilardo v Dmitrii Vasilev | 5-7,6-3,0-4 |
| UTR Pro Tennis Series Barcelona | 2021/01/29 13:30 | Dmitrii Vasilev v Alessandro Bega | 3-6,2-6 |