Stadium: Grandstand Round: 54 Ground: Clay
| ITF W25 - Vero Beach | 2020/01/20 16:00 | Mari Osaka v Charlotte Chavatipon | 1-6,7-6,10-5 |
| ITF W25 - Daytona Beach | 2020/01/16 14:30 | Mari Osaka v Dalma Galfi | 2-6,0-6 |
| ITF W25 - Daytona Beach | 2020/01/15 16:40 | Quinn Gleason v Mari Osaka | 6-4,3-6,5-7 |
| WTA - Houston | 2019/11/14 00:00 | Caty McNally v Mari Osaka | 6-2,6-0 |
| WTA - Houston | 2019/11/10 20:00 | Mari Osaka v Deniz Khazaniuk | 6-1,7-5 |
| ITF - W60 Playford | 2019/10/30 04:35 | Mari Osaka v Naiktha Bains | 1-6,2-6 |
| ITF W60 - Bendigo | 2019/10/23 03:20 | Maddison Inglis v Mari Osaka | 7-5,6-4 |
| ITF W25 Hilton Head Island | 2019/10/11 14:00 | Mari Osaka v Marina Melnikova | 1-6,6-1,3-6 |
| ITF W25 - Vero Beach | 2020/01/20 16:00 | Dasha Ivanova v Haruna Arakawa | 6-4,6-1 |
| ITF W25 - Daytona Beach | 2020/01/16 16:30 | Dasha Ivanova v Daniela Seguel | 2-6,0-6 |
| ITF W25 - Daytona Beach | 2020/01/15 16:50 | Dasha Ivanova v Eri Hozumi | 6-1,6-4 |
| ITF W25 - Daytona Beach | 2020/01/14 14:30 | Dasha Ivanova v Sophia Whittle | 6-1,6-2 |
| ITF W25 - Daytona Beach | 2020/01/12 16:00 | Ana K G Campos v Dasha Ivanova | 0-6,1-6 |
| ITF W25 Orlando | 2019/11/14 18:00 | Arantxa Rus v Dasha Ivanova | 6-2,6-2 |
| ITF W25 Orlando | 2019/11/13 17:50 | Dasha Ivanova v Carolina Alves | 6-4,7-5 |
| ITF W25 Orlando | 2019/11/12 18:00 | Melanie Stokke v Dasha Ivanova | 4-6,3-6 |