Stadium: Grandstand 4 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Lubbock | 2022/09/20 14:00 | Wyatt DeMulling v Jakub Ostajewski | 6-1,4-6,4-10 |
| ITF M15 Lubbock | 2022/09/19 16:30 | Zachary Mintz v Jakub Ostajewski | 1-6,0-6 |
| 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 Lambermont | 2022/08/26 11:00 | Jakub Wojcik v Stijn Slump | 6-3,6-7,4-6 |
| ITF M15 Lambermont | 2022/08/25 09:00 | Jakub Wojcik v Noah Schlagenhauf | 6-2,2-6,7-5 |
| ITF M15 Lambermont | 2022/08/23 11:25 | Nathan Seateun v Jakub Wojcik | 5-7,6-2,3-6 |
| ITF M25 Koksijde | 2022/08/15 16:55 | Jakub Wojcik v Joris De Loore | 5-7,2-6 |
| ITF M15 Eupen | 2022/08/10 09:00 | Philip Florig v Jakub Wojcik | 7-6,6-1 |
| ITF M15 Eupen | 2022/08/09 08:00 | Jakub Wojcik v Alexander Wolfschmidt | 2-6,6-0,8-10 |
| ITF M15 Eupen | 2022/08/08 10:40 | Jakub Wojcik v Natan D'Hulst | 6-0,6-0 |
| ITF M15 Eupen | 2022/08/07 07:30 | Jakub Wojcik v Marcel Hornung | 6-3,6-4 |