Stadium: Court A Round: 27 Ground: Hardcourt outdoor
| ITF W25 Nonthaburi | 2019/05/23 05:25 | Mari Osaka v Magali Kempen | 6-2,7-5 |
| ITF W25 Nonthaburi | 2019/05/21 11:20 | Mari Osaka v Punnin Kovapitukted | 6-3,6-3 |
| ITF W100 Charleston | 2019/05/01 14:00 | Veronica Cepede Royg v Mari Osaka | 1-6,7-5,6-3 |
| ITF W100 Charleston | 2019/04/30 15:35 | Mari Osaka v Sanaz Marand | 7-5,6-4 |
| ITF W100 Charleston | 2019/04/29 14:00 | Mari Osaka v Joelle Kissell | 6-1,6-2 |
| ITF W25 Osprey | 2019/04/25 15:30 | Ann Li v Mari Osaka | 6-1,6-3 |
| ITF W25 Osprey | 2019/04/24 19:10 | Alexandra Perper v Mari Osaka | 6-0,4-6,0-6 |
| ITF W25 Pelham | 2019/04/11 23:30 | Mari Osaka v Sesil Karatantcheva | 4-6,4-6 |
| ITF W25 Nonthaburi | 2019/05/23 03:00 | Aleksandrina Naydenova v Maddison Inglis | 3-6,4-6 |
| ITF W25 Nonthaburi | 2019/05/22 06:20 | Yinglak Jittakoat v Maddison Inglis | 1-6,0-6 |
| ITF W60 Kurume | 2019/05/15 03:10 | Maddison Inglis v Yuki Naito | 2-6,2-6 |
| ITF W60 Fukuoka | 2019/05/09 02:00 | Ayano Shimizu v Maddison Inglis | 2-6,7-5,6-4 |
| ITF W80 Gifu | 2019/05/04 04:25 | Zarina Diyas v Maddison Inglis | 1-6,6-4,6-1 |
| ITF W80 Gifu | 2019/05/03 02:15 | Risa Ozaki v Maddison Inglis | 7-6,2-6,2-6 |
| ITF W80 Gifu | 2019/05/02 01:00 | Maddison Inglis v Luksika Kumkhum | 6-4,2-6,6-3 |
| ITF W80 Gifu | 2019/05/01 02:35 | Yuki Naito v Maddison Inglis | 3-6,4-6 |