Stadium: Court 5S Round: 54 Ground: Hardcourt outdoor
| ITF M15 Waco | 2022/07/04 15:00 | Hans C B Gonzalez v Vega, Leonardo | 3-6,4-6 |
| International Tennis Series | 2020/07/26 14:55 | Vega, Leonardo v Grigoriy Lomakin | 1-6,0-6 |
| International Tennis Series | 2020/07/26 12:00 | Ore, I. A. v Vega, Leonardo | 6-2,6-3 |
| International Tennis Series | 2020/07/25 17:15 | Vega, Leonardo v Cerretani, J. | 1-6,2-6 |
| International Tennis Series | 2020/07/25 14:00 | Vega, Leonardo v Boris Arias | 6-3,4-6,13-11 |
| International Tennis Series | 2020/07/07 14:15 | Vega, Leonardo v Liam Draxl | 0-6,2-6 |
| International Tennis Series | 2020/07/07 12:00 | Metz, David v Vega, Leonardo | 5-7,6-7 |
| International Tennis Series | 2020/07/06 15:35 | Mercier, Tyler v Vega, Leonardo | 6-2,6-4 |
| ITF M15 Ueberlingen | 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 | Vos, Matthew v Jakub Ostajewski | 3-6,1-6 |
| Dallas, Singles Main, M-ITF-USA-18A | 2022/06/27 14:00 | Middleton, Jett v Jakub Ostajewski | 6-1,3-6,10-0 |
| ITF M15 South Bend | 2022/06/20 13:00 | Kiger, Mac 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 |