| ITF W80 Macon | 2019/10/27 15:55 | Katerina Stewart v Shelby Rogers | 6-7,6-3,6-2 |
| ITF W80 Macon | 2019/10/26 16:30 | Katerina Stewart v Danielle Lao | 6-3,6-0 |
| ITF W80 Macon | 2019/10/25 15:20 | Irina Falconi v Katerina Stewart | 4-6,6-7 |
| ITF W80 Macon | 2019/10/24 14:00 | Katerina Stewart v Caroline Dolehide | 6-4,3-6,6-3 |
| ITF W80 Macon | 2019/10/23 16:00 | Hanna Chang v Katerina Stewart | 6-0,6-7,2-6 |
| ITF W25 Florence | 2019/10/17 14:00 | Katerina Stewart v Emma Navarro | 6-2,4-6,5-7 |
| ITF W25 Florence | 2019/10/16 17:00 | Johanna Larsson v Katerina Stewart | 3-6,4-6 |
| ITF W25 Hilton Head Island | 2019/10/10 14:00 | Katerina Stewart v Panna Udvardy | 3-6,4-6 |
| US Pro Tennis Series Women | 2020/05/06 23:00 | Mari Osaka v Sofia Sewing | 6-3,6-1 |
| US Pro Tennis Series Women | 2020/05/06 18:30 | Renata Zarazua v Mari Osaka | 3-6,6-4,1-0 |
| ITF W25 Irapuato | 2020/03/12 01:55 | Nadia Podoroska v Mari Osaka | 6-0,6-4 |
| ITF W25 Irapuato | 2020/03/09 18:30 | Mari Osaka v Georgina Garcia-Perez | 7-5,7-6 |
| ITF W25 Rancho Santa Fe | 2020/02/25 18:00 | Mari Osaka v Rebecca Sramkova | 2-6,4-6 |
| ITF W25 Rancho Santa Fe | 2020/02/24 20:00 | Mari Osaka v Emina Bektas | 6-1,3-6,10-6 |
| ITF W100 Nicholasville | 2020/02/10 17:00 | Peyton Stearns v Mari Osaka | 6-0,7-6 |
| ITF W100 Midland | 2020/02/03 19:35 | Mari Osaka v Marine Partaud | 3-6,7-6,6-10 |