| UTR Pro Athens | 2022/08/14 05:00 | Wadym Konowczuk v Stefan Skobelev | 3-6,2-6 |
| UTR Pro Athens | 2022/08/13 05:00 | Ammar Elamin v Wadym Konowczuk | 6-2,2-6,4-6 |
| UTR Pro Athens | 2022/08/12 05:00 | Wadym Konowczuk v Tadija Radovanovic | 4-6,4-6 |
| UTR Pro Athens | 2022/08/11 06:30 | Wadym Konowczuk v Christos Keisidis | 6-7,2-6 |
| UTR Pro Athens | 2022/08/09 09:00 | Denys Klok v Wadym Konowczuk | 6-3,6-2 |
| UTR Pro Athens | 2022/08/07 05:00 | Wadym Konowczuk v Athanasios Spyropoulos | 4-6,2-6 |
| UTR Pro Athens | 2022/08/04 08:00 | Rayane Oumaouche v Wadym Konowczuk | 6-2,5-2 |
| UTR Pro Athens | 2022/08/02 05:00 | Stefan Skobelev v Wadym Konowczuk | 6-2,6-2 |
| ITF M15 Champaign | 2022/09/13 15:00 | Alexander Petrov v Jakub Ostajewski | 6-2,6-2 |
| ITF M15 Uberlingen | 2022/08/16 08:00 | Daniel Siniakov v Jakub Ostajewski | 3-6,6-3,10-7 |
| ITF M15 Waco | 2022/07/06 13:30 | Jakub Ostajewski v Kaylan Bigun | 3-6,3-6 |
| ITF M15 Waco | 2022/07/05 13:30 | Babji Siva Atturu v Jakub Ostajewski | 0-6,1-6 |
| ITF M15 Waco | 2022/07/04 13:30 | Matthew Vos v Jakub Ostajewski | 3-6,1-6 |
| ITF M25 Dallas | 2022/06/27 14:00 | Jett Middleton v Jakub Ostajewski | 6-1,3-6,10-0 |
| ITF M15 South Bend | 2022/06/20 13:00 | Mac Kiger v Jakub Ostajewski | 6-1,6-1 |
| ITF M25 Cancun | 2022/05/16 14:00 | Jakub Ostajewski v Gabriel Evans | 3-6,4-6 |