| 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 |
| ITF - M15 Antalya | 2021/06/27 06:30 | Ragazzi, Alessandro v Kolisnyk, Olexiy | 6-7,3-6 |
| UTR Pro Tennis Series Beograd | 2021/07/09 12:00 | Yanais Laurent v Luka Pavlovic | 3-6,2-5 |
| UTR Pro Tennis Series Beograd | 2021/07/08 07:30 | Petar Teodorovic v Luka Pavlovic | 3-6,6-4,4-5 |
| UTR Pro Tennis Series Beograd | 2021/07/07 09:00 | Luka Todorovic v Luka Pavlovic | 2-6,0-6 |
| UTR Pro Tennis Series Beograd | 2021/07/05 12:00 | Borza, Bogdan v Luka Pavlovic | 6-3,7-5 |
| ITF M25 Belgrade | 2021/06/28 07:00 | Dusan Obradovic v Luka Pavlovic | 6-4,3-6,10-4 |
| ITF M25 Belgrade | 2021/06/27 09:00 | Boris Butulija v Luka Pavlovic | 4-6,3-6 |
| ITF M15 Skopje | 2021/06/07 08:00 | Kalender, Admir v Luka Pavlovic | 6-1,6-4 |
| ITF M15 Skopje | 2021/06/06 09:00 | Habsuda, Simon v Luka Pavlovic | 3-6,2-6 |