Round: 25 Ground: Hardcourt indoor
| ITF M15 St Petersburg | 2021/04/04 07:00 | Shchaya-Zubrov, Pavel v Illya Beloborodko | 2-6,0-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/18 07:30 | Lucas Miedler v Illya Beloborodko | 7-6,6-1 |
| ITF - M15 Sharm El Sheikh | 2021/03/17 07:30 | Ozolins, Karlis v Illya Beloborodko | 2-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/16 07:30 | Giorgio Ricca v Illya Beloborodko | 6-7,4-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/15 07:30 | Troche, Emiliano v Illya Beloborodko | 1-6,4-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/14 08:00 | Guberman, Yaron v Illya Beloborodko | 0-6,0-6 |
| ITF - M15 Sharm El Sheikh | 2021/03/12 07:30 | Illya Beloborodko v Hanwen Li | 4-6,6-7 |
| ITF - M15 Sharm El Sheikh | 2021/03/11 09:00 | Illya Beloborodko v Eremin, Edoardo | 4-6,6-2,6-2 |
| ITF M15 Kazan | 2021/03/13 08:00 | Alexey Zakharov v Alibek Kachmazov | 7-5,6-3 |
| ITF M15 Kazan | 2021/03/12 09:40 | Ivan Gakhov v Alibek Kachmazov | 3-6,7-6,3-6 |
| ITF M15 Kazan | 2021/03/11 11:55 | Alibek Kachmazov v Stepin, Alexander | 6-4,6-3 |
| ITF M15 Kazan | 2021/03/10 14:50 | Alibek Kachmazov v Noskin, Egor | 6-2,6-1 |
| Nur Sultan, Kazakhstan | 2021/03/03 06:05 | James Duckworth v Alibek Kachmazov | 6-4,5-7,7-5 |
| Nur Sultan, Kazakhstan | 2021/03/01 06:15 | Ulises Blanch v Alibek Kachmazov | 2-6,6-4,3-6 |
| ITF M15 St Petersburg | 2021/02/10 10:40 | Alibek Kachmazov v Deviatiarov, Marat | 2-6,4-6 |
| ITF M15 St Petersburg | 2021/02/07 08:00 | Alexey Zakharov v Alibek Kachmazov | 4-6,7-5,4-6 |