Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| 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 |
| ITF M15 - Cancun | 2022/05/10 15:00 | Jakub Ostajewski v Rowland Phillips | 3-6,0-6 |
| ITF M15 - Vero Beach | 2022/04/25 16:00 | Alvaro G Meza v Jakub Ostajewski | 6-1,6-2 |
| ITF M15 - Sharm El Sheikh | 2022/04/04 09:00 | Cesar Bourgois v Jakub Ostajewski | 6-3,6-3 |
| ITF M15 - Vero Beach | 2022/04/26 16:00 | Alvaro G Meza v Kaylan Bigun | 6-2,6-4 |
| ITF M15 - Vero Beach | 2022/04/25 16:00 | Kaylan Bigun v Fabian Hansch Mauritzson | 6-1,6-1 |
| UTR Pro Tennis Series - Bradenton | 2022/02/28 18:33 | Kaylan Bigun v Matyas Fuele | 6-7,4-6 |
| UTR Pro Tennis Series - Florida | 2021/09/17 22:30 | Adam Ambrozy v Kaylan Bigun | 5-7,3-5 |
| UTR Pro Tennis Series - Florida | 2021/09/16 15:00 | Brian Berdusco v Kaylan Bigun | 7-5,6-0 |
| UTR Pro Tennis Series - Florida | 2021/09/14 13:30 | Nicholas Bybel v Kaylan Bigun | 6-2,6-2 |
| UTR Pro Tennis Series - Florida | 2021/09/13 16:30 | Kaylan Bigun v Daniel Mora | 2-6,4-6 |