| UTR Pro Tennis Series Atlanta Women | 2021/07/21 17:30 | Karolina Jacobson v Hrastar, Ava | 2-6,3-5 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/19 18:00 | Aldila Sutjiadi v Karolina Jacobson | 7-6,6-2 |
| UTR Pro Tennis Series California Women | 2021/06/29 15:00 | Karolina Jacobson v Mireles, Jeanette | 7-6,1-6,4-6 |
| UTR Pro Tennis Series California Women | 2021/06/28 18:00 | Karolina Jacobson v Cataldi, Taylor | 5-7,1-6 |
| UTR Pro Tennis Series California Women | 2021/06/27 18:00 | Carolyn Ansari v Karolina Jacobson | 3-6,6-1,5-7 |
| UTR Pro Tennis Series California Women | 2021/06/17 18:00 | Karolina Jacobson v Kami Osher | 3-6,6-3,3-6 |
| UTR Pro Tennis Series California Women | 2021/06/16 19:30 | Karolina Jacobson v Veronika Miroshnichenko | 1-6,1-5 |
| UTR Pro Tennis Series California Women | 2021/06/15 15:00 | Karolina Jacobson v Mayra Jovic | 4-6,6-2,7-6 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/21 17:30 | Aldila Sutjiadi v Machalova, Sabina | 3-6,7-5,6-2 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/18 14:30 | Hrastar, Ava v Machalova, Sabina | 6-3,5-4 |
| UTR Pro Tennis Series Dallas Women | 2021/07/10 14:30 | Sankavi Gownder v Machalova, Sabina | 6-3,2-6,7-6 |
| UTR Pro Tennis Series Dallas Women | 2021/07/09 17:30 | Abrams, Sophie v Machalova, Sabina | 7-6,4-6,7-6 |
| UTR Pro Tennis Series Dallas Women | 2021/07/08 13:00 | Enya Ratkic v Machalova, Sabina | 0-6,0-6 |
| UTR Pro Tennis Series Dallas Women | 2021/07/07 14:30 | Catherine Harrison v Machalova, Sabina | 6-3,7-6 |
| UTR Pro Tennis Series Dallas Women | 2021/07/05 17:30 | Riedmiller, Anna v Machalova, Sabina | 6-4,7-6 |
| ITF W15 Lubbock | 2019/09/16 15:00 | Pielet, Gianna v Machalova, Sabina | 4-6,6-2,10-5 |