Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| WTA Hiroshima | 2018/09/08 02:00 | Risa Ozaki v Chihiro Muramatsu | 4-6,6-3,3-6 |
| ITF W60 Fukuoka | 2019/05/10 04:00 | Zarina Diyas v Risa Ozaki | 6-2,6-0 |
| ITF W60 Fukuoka | 2019/05/09 03:55 | Berfu Cengiz v Risa Ozaki | 3-6,3-6 |
| ITF W60 Fukuoka | 2019/05/07 03:20 | Risa Ozaki v Jamie Loeb | 6-1,6-7,6-2 |
| 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 03:20 | Danielle Lao v Risa Ozaki | 2-6,3-6 |
| ITF W80 Gifu | 2019/04/30 02:35 | Kristie Ahn v Risa Ozaki | 2-6,3-6 |
| ITF W25 Osaka | 2019/04/11 02:45 | Risa Ozaki v Erika Sema | 5-7,6-7 |
| ITF W25 Osaka | 2019/04/09 01:00 | Risa Ozaki v Mei Yamaguchi | 6-4,4-6,6-2 |
| ITF W60 Luan | 2019/05/08 02:00 | Chihiro Muramatsu v Valeria Savinykh | 0-6,0-6 |
| ITF W80 Gifu | 2019/04/30 01:00 | Danielle Lao v Chihiro Muramatsu | 6-3,6-1 |
| WTA Anning | 2019/04/26 04:00 | Kaylah McPhee v Chihiro Muramatsu | 6-2,6-4 |
| WTA Anning | 2019/04/24 02:30 | Chihiro Muramatsu v Lin Zhu | 7-6,6-4 |
| WTA Anning | 2019/04/22 02:30 | Amandine Hesse v Chihiro Muramatsu | 6-2,3-6,4-6 |
| WTA Anning | 2019/04/21 02:30 | Chihiro Muramatsu v Miyabi Inoue | 7-6,7-6 |
| WTA Anning | 2019/04/20 02:30 | Marina Melnikova v Chihiro Muramatsu | 2-6,5-7 |
| ITF W25 Hong Kong | 2019/04/12 09:30 | Eri Hozumi v Chihiro Muramatsu | 7-6,5-7,6-1 |