Stadium: Court 18 Round: 25 Ground: Clay
| ITF - M15 Antalya | 2021/06/15 07:30 | Kolisnyk, Olexiy v Scott, Fletcher | 6-2,7-6 |
| ITF - M15 Antalya | 2021/06/14 09:45 | Kolisnyk, Olexiy v Anton Semenov | 7-6,6-0 |
| ITF - M15 Antalya | 2021/06/13 07:30 | Kuan-Yi Lee v Kolisnyk, Olexiy | 5-7,6-7 |
| ITF M15 Novomoskovsk | 2021/05/31 07:00 | Aliaksandr Liaonenka v Kolisnyk, Olexiy | 3-6,6-3,10-8 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Kolisnyk, Olexiy v Alcalde, Juan Ignacio | 6-3,6-4 |
| ITF M15 Novomoskovsk | 2021/05/24 12:00 | Kolisnyk, Olexiy v Alexander Zgirovsky | 7-6,2-6,8-10 |
| ITF M15 Novomoskovsk | 2021/05/23 08:00 | Kolisnyk, Olexiy v Boychuk, Roman | 6-4,2-6,10-8 |
| ITF M15 Cairo | 2021/05/05 11:00 | Jose Pereira v Kolisnyk, Olexiy | 7-5,6-0 |
| ITF M25 Jablonec Nad Nisou | 2021/05/19 07:55 | Pavlasek, Adam v Facundo Diaz Acosta | 2-6,3-6 |
| ITF M25 Prague | 2021/05/12 07:30 | Pavlasek, Adam v Jack Draper | 2-6,4-6 |
| ITF M25 Prague | 2021/05/11 09:30 | Pavlasek, Adam v Petr Michnev | 6-4,6-2 |
| ITF M25 Prague | 2021/05/10 09:00 | Pavlasek, Adam v Jiri Barnat | 6-3,4-6,14-12 |
| ITF M25 Prague | 2021/05/09 10:00 | Pavlasek, Adam v Papik, Tomas | 6-2,6-7,10-1 |
| Challenger - Ostrava | 2021/04/26 10:50 | Oscar Otte v Pavlasek, Adam | 6-2,6-4 |
| Challenger - Ostrava | 2021/04/25 13:35 | Pavlasek, Adam v Jaziri, Malek | 1-6,6-4,7-5 |
| ITF - M15 Antalya | 2021/04/09 08:40 | Eremin, Edoardo v Pavlasek, Adam | 6-2,6-3 |