| UTR Pro Tennis Series Portoroz | 2021/08/24 08:30 | Nik Razborsek v Olexiy Kolisnyk | 5-7,6-2,2-6 |
| UTR Pro Tennis Series Portoroz | 2021/08/21 09:30 | Olexiy Kolisnyk v Deni Zmak | 4-6,6-7 |
| UTR Pro Tennis Series Portoroz | 2021/08/20 11:00 | Olexiy Kolisnyk v Lawrence Bataljin | 6-3,6-2 |
| UTR Pro Tennis Series Portoroz | 2021/08/18 08:00 | George Botezan v Olexiy Kolisnyk | 5-7,1-6 |
| UTR Pro Tennis Series Portoroz | 2021/08/17 09:30 | Teodor Ureche v Olexiy Kolisnyk | 0-6,2-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/15 08:00 | Olexiy Kolisnyk v Federico Zeballos | 2-6,6-2,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/14 06:30 | Olexiy Kolisnyk v Jordi Mas De Ugarte | 6-3,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/13 06:30 | Xavier Gabarro v Olexiy Kolisnyk | 3-6,3-6 |
| ITF M15 Helsinki | 2021/06/01 08:50 | Yannik Steinegger v Alexander Chepik | 6-4,6-3 |
| ITF M15 Kouvola | 2021/05/24 09:30 | Alexander Chepik v August Ehrnrooth | 2-6,6-7 |
| ITF M15 Shymkent | 2021/04/14 07:30 | Alexander Chepik v Nikita Mashtakov | 7-6,3-6,4-6 |
| ITF M15 Shymkent | 2021/04/13 05:00 | Sharobiddin Abzalov v Alexander Chepik | 6-0,4-6,5-10 |
| ITF M15 Shymkent | 2021/04/12 09:40 | Islam Orynbasar v Alexander Chepik | 1-6,3-6 |
| ITF M15 Shymkent | 2021/04/06 07:15 | Mark Tryakshin v Alexander Chepik | 6-3,7-6 |
| ITF M15 Shymkent | 2021/04/05 04:55 | Yerassyl Yerdilda v Alexander Chepik | 3-6,5-7 |
| ITF M15 Kazan | 2021/03/08 09:45 | Ivan Liutarevich v Alexander Chepik | 6-4,6-2 |