Stadium: Court 5 Round: 28 Ground: Hardcourt outdoor
| ITF Women Nonthaburi | 2018/07/12 02:00 | Risa Ozaki v Hiroko Kuwata | 6-2,4-6,6-2 |
| ITF W25 Jakarta | 2019/06/21 02:00 | Hiroko Kuwata v Risa Ushijima | 6-3,4-6,7-6 |
| ITF W25 Jakarta | 2019/06/20 03:00 | Hiroko Kuwata v Erika Sema | 6-4,0-6,6-4 |
| ITF W25 Jakarta | 2019/06/19 03:20 | Hiroko Kuwata v Jessy Rompies | 6-2,1-6,7-5 |
| ITF W60 Kurume | 2019/05/15 02:35 | Hiroko Kuwata v Ena Shibahara | 7-5,0-6,2-6 |
| ITF W60 Fukuoka | 2019/05/08 02:55 | Leonie Kung v Hiroko Kuwata | 6-3,6-2 |
| ITF W80 Gifu | 2019/04/30 01:00 | Hiroko Kuwata v Xinyun Han | 3-6,2-6 |
| WTA Anning | 2019/04/22 04:40 | Kai-Lin Zhang v Hiroko Kuwata | 7-6,6-3 |
| ITF W80 Dothan | 2019/04/16 18:50 | Hiroko Kuwata v Deniz Khazaniuk | 3-6,4-6 |
| ITF W25 Jakarta | 2019/06/21 02:00 | Risa Ozaki v Nudnida Luangnam | 6-2,7-5 |
| ITF W25 Jakarta | 2019/06/20 05:30 | Risa Ozaki v Beatrice Gumulya | 2-6,6-1,6-1 |
| ITF W25 Jakarta | 2019/06/19 02:00 | Risa Ozaki v Janice Tjen | 6-0,6-2 |
| ITF W25 Nonthaburi | 2019/05/29 08:30 | Magali Kempen v Risa Ozaki | 6-1,7-5 |
| ITF W25 Nonthaburi | 2019/05/23 03:00 | Alexandra Bozovic v Risa Ozaki | 6-4,4-6,6-4 |
| ITF W25 Nonthaburi | 2019/05/22 03:00 | Watsachol Sawasdee v Risa Ozaki | 3-6,6-7 |
| ITF W60 Kurume | 2019/05/14 02:30 | Risa Ozaki v Miharu Imanishi | 3-6,1-6 |
| ITF W60 Fukuoka | 2019/05/10 04:00 | Zarina Diyas v Risa Ozaki | 6-2,6-0 |