| UTR Pro Tennis Series Beograd | 2021/07/10 11:30 | Kolisnyk, Olexiy v Luka Pavlovic | 4-6,6-1,6-2 |
| UTR Pro Tennis Series Beograd | 2021/07/09 07:30 | de La Bassetiere, Constant v Kolisnyk, Olexiy | 6-7,4-5 |
| UTR Pro Tennis Series Beograd | 2021/07/08 09:00 | Slavic, Nikola v Kolisnyk, Olexiy | 1-6,4-6 |
| UTR Pro Tennis Series Beograd | 2021/07/07 10:30 | Dusan Obradovic v Kolisnyk, Olexiy | 6-0,5-4 |
| UTR Pro Tennis Series Beograd | 2021/07/05 07:30 | Michalis Sakellaridis v Kolisnyk, Olexiy | 3-5 |
| ITF - M15 Antalya | 2021/06/30 08:50 | Kolisnyk, Olexiy v Louroi Martinez | 6-2,2-6,1-6 |
| ITF - M15 Antalya | 2021/06/29 06:30 | Kolisnyk, Olexiy v Lorenzo Joaquin Rodriguez | 6-2,6-1 |
| ITF - M15 Antalya | 2021/06/28 07:55 | Ray Ho v Kolisnyk, Olexiy | 6-3,2-6,9-11 |
| UTR Pro Tennis Series Beograd | 2021/07/10 11:30 | Alex Kuperstein v Thirouin, Jean | 4-6,3-6 |
| UTR Pro Tennis Series Beograd | 2021/07/08 10:30 | Thirouin, Jean v Viktor Jovic | 6-2,6-4 |
| UTR Pro Tennis Series Beograd | 2021/07/07 12:00 | Thirouin, Jean v Aleksa Mardjonovic | 6-4,6-2 |
| UTR Pro Tennis Series Beograd | 2021/07/06 07:30 | Thirouin, Jean v Shyla, Yaraslau | 1-6,1-5 |
| UTR Pro Tennis Series Beograd | 2021/07/05 09:00 | Thirouin, Jean v Latinovic, Stefan | 6-3,7-6 |
| ITF - M25 Grasse | 2021/06/16 10:00 | Lopez San Martin, Alvaro v Thirouin, Jean | 6-1,6-1 |
| ITF M15 Skopje | 2021/06/10 08:25 | Thirouin, Jean v Jirousek, Tomas | 1-6,3-6 |
| ITF M15 Skopje | 2021/06/01 14:05 | Thirouin, Jean v Dalibor Svrcina | 3-6,6-7 |