Stadium: Court 4 Round: 27 Ground: Clay
| ITF M15 Zlatibor | 2021/09/16 09:30 | Yan Bondarevskiy v Luigi Sorrentino | 6-2,6-2 |
| ITF M15 Zlatibor | 2021/09/15 08:00 | Yan Bondarevskiy v Kristof Minarik | 6-1,6-4 |
| Challenger Kyiv | 2021/09/05 09:30 | Vladyslav Orlov v Yan Bondarevskiy | 7-5,6-2 |
| ITF M15 Chornomorsk | 2021/09/04 07:00 | Illya Beloborodko v Yan Bondarevskiy | 3-6,6-4,6-3 |
| ITF M15 Chornomorsk | 2021/09/03 07:00 | Yan Bondarevskiy v Julius Tverijonas | 6-2,6-3 |
| ITF M15 Chornomorsk | 2021/09/02 08:30 | Yan Bondarevskiy v Filip Pieczonka | 6-2,6-2 |
| ITF M15 Chornomorsk | 2021/09/01 07:00 | Yan Bondarevskiy v Ainius Sabaliauskas | 7-5,6-2 |
| Challenger Barletta | 2021/08/23 09:00 | Nicolas Alvarez v Yan Bondarevskiy | 6-2,3-6,7-6 |
| ITF M15 Zlatibor | 2021/09/16 11:30 | Zsombor Velcz v Sebastian Gima | 6-3,6-4 |
| ITF M15 Zlatibor | 2021/09/15 09:30 | Zsombor Velcz v Savva Polukhin | 6-4,6-4 |
| ITF M15 Zilina | 2021/09/03 09:45 | Zsombor Velcz v Adria Soriano Barrera | 3-6,4-6 |
| ITF M15 Zilina | 2021/09/02 07:55 | Zsombor Velcz v Peter Nad | 7-6,6-2 |
| ITF M15 Zilina | 2021/09/01 14:45 | Mathieu Perchicot v Zsombor Velcz | 4-6,3-6 |
| ITF M15 Bratislava | 2021/08/18 08:00 | Bastian Malla v Zsombor Velcz | 6-2,6-2 |
| ITF M15 Bratislava | 2021/08/17 08:00 | Zsombor Velcz v Lukas H Lilleengen | 7-5,6-2 |
| ITF M15 Bratislava | 2021/08/16 08:00 | Zsombor Velcz v Matej Galik | 6-0,6-2 |