Stadium: Court 4 Round: 27 Ground: Hardcourt indoor
| ITF - St Petersburg M15 | 2021/04/07 09:55 | Illya Beloborodko v Constantin Bittoun Kouzmine | 6-3,6-1 |
| ITF - St Petersburg M15 | 2021/04/04 07:00 | Pavel Shchaya-Zubrov v Illya Beloborodko | 2-6,0-6 |
| ITF - Sharm El Sheikh M15 | 2021/03/18 07:30 | Lucas Miedler v Illya Beloborodko | 7-6,6-1 |
| ITF - Sharm El Sheikh M15 | 2021/03/17 07:30 | Karlis Ozolins v Illya Beloborodko | 2-6,1-6 |
| ITF - Sharm El Sheikh M15 | 2021/03/16 07:30 | Giorgio Ricca v Illya Beloborodko | 6-7,4-6 |
| ITF - Sharm El Sheikh M15 | 2021/03/15 07:30 | Emiliano Troche v Illya Beloborodko | 1-6,4-6 |
| ITF - Sharm El Sheikh M15 | 2021/03/14 08:00 | Yaron Guberman v Illya Beloborodko | 0-6,0-6 |
| ITF - Sharm El Sheikh M15 | 2021/03/12 07:30 | Illya Beloborodko v Hanwen Li | 4-6,6-7 |
| ITF - St Petersburg M15 | 2021/04/08 11:15 | Yanki Erel v Konstantin Kravchuk | 6-4,6-1 |
| ITF - St Petersburg M15 | 2021/04/07 07:00 | Ivan Davydov v Yanki Erel | 2-6,3-6 |
| ITF - St Petersburg M15 | 2021/04/05 06:55 | Yanki Erel v Dominik Recek | 7-5,6-2 |
| ITF - St Petersburg M15 | 2021/04/04 08:25 | Yanki Erel v Mert Alkaya | 6-1,7-5 |
| ITF - Antalya M15 | 2021/03/17 08:00 | Vladimir Korolev v Yanki Erel | 2-6,6-0,6-1 |
| ITF - Kazań M15 | 2021/03/13 11:30 | Yanki Erel v Evgeny Philippov | 6-1,6-2 |
| ITF - Kazań M15 | 2021/03/12 07:00 | Yanki Erel v Sanjar Fayziev | 6-3,3-6,6-3 |
| ITF - Kazań M15 | 2021/03/11 08:00 | Sergey Bolotov v Yanki Erel | 2-6,2-6 |