Stadium: Court 5 Round: 54 Ground: Clay
| ITF M25 Wesley Chapel | 2023/01/23 14:45 | Thomas Brown v Jakub Ostajewski | 6-3,6-1 |
| ITF M25 Malibu | 2023/01/02 17:00 | Alex Kuperstein v Jakub Ostajewski | 7-6,6-2 |
| ITF M15 Boca Raton | 2022/11/14 16:00 | Sean Daryabeigi v Jakub Ostajewski | 6-2,6-3 |
| ITF M15 Winston-Salem | 2022/11/07 18:00 | James Story v Jakub Ostajewski | 6-2,7-5 |
| ITF M15 Lubbock | 2022/09/21 17:05 | Jakub Ostajewski v Jakub Wojcik | 4-6,4-6 |
| 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 M25 Vacaria | 2022/11/28 18:15 | Benjamin Denis Alarcon v Enzo Fortes | 6-7,4-6 |
| ITF M25 Lajeado | 2022/11/21 13:50 | Benjamin Denis Alarcon v Thiago Guglieri | 1-6,6-3,10-12 |
| ITF M15 Cordoba | 2022/11/09 16:45 | Benjamin Denis Alarcon v Ignacio Monzon | 2-6,3-6 |
| ITF M15 Cordoba | 2022/11/08 12:30 | Benjamin Denis Alarcon v Matias Riva | 6-1,6-2 |
| ITF M15 Cordoba | 2022/11/07 13:00 | Benjamin Denis Alarcon v Tobias Sonne | 6-3,7-5 |
| ITF M15 Santa Cruz | 2022/10/30 13:00 | Alessio Zanotti v Benjamin Denis Alarcon | 6-2,6-4 |
| ITF M15 Santa Cruz | 2022/10/24 13:00 | Julian Gimenez v Benjamin Denis Alarcon | 6-1,6-2 |
| ITF M15 Cochabamba | 2022/10/20 21:10 | Davide Pontoglio v Benjamin Denis Alarcon | 6-0,6-1 |