Stadium: Court B1 Round: 26 Ground: Hardcourt outdoor
| ITF Women Nonthaburi | 2018/08/14 05:30 | Punnin Kovapitukted v Hiroko Kuwata | 6-3,6-3 |
| ITF Women Nonthaburi | 2018/08/06 06:45 | Hiroko Kuwata v Hua-Chen Lee | 6-1,0-6,3-6 |
| WTA Nanchang | 2018/07/24 09:00 | Hiroko Kuwata v Fangzhou Liu | 5-7,3-6 |
| WTA Nanchang Qual | 2018/07/22 10:25 | Mai Minokoshi v Hiroko Kuwata | 2-6,1-6 |
| WTA Nanchang Qual | 2018/07/21 13:10 | Chantal Skamlova v Hiroko Kuwata | 4-6,0-6 |
| ITF Women Nonthaburi | 2018/07/20 05:45 | Hiroko Kuwata v Kai-Lin Zhang | 6-1,2-6,5-7 |
| ITF Women Nonthaburi | 2018/07/20 02:00 | Hiroko Kuwata v Rutuja Bhosale | 6-2,6-1 |
| ITF Women Nonthaburi | 2018/07/19 05:00 | Hiroko Kuwata v Pei-Chi Lee | 6-3,4-6,6-4 |
| ITF Women Tsukuba | 2018/08/22 00:30 | Chihiro Muramatsu v Michika Ozeki | 6-1,6-2 |
| ITF Women Nonthaburi | 2018/08/13 02:00 | Chihiro Muramatsu v Mana Ayukawa | 5-7,5-7 |
| ITF Women Nonthaburi | 2018/08/07 02:00 | Chihiro Muramatsu v Dabin Kim | 1-6,1-6 |
| ITF Women Contrexeville Qual | 2018/07/08 08:00 | Margot Yerolymos v Chihiro Muramatsu | 6-3,7-5 |
| ITF Women Denain | 2018/07/04 11:35 | Chihiro Muramatsu v Valeriya Strakhova | 1-6,4-6 |
| ITF Women Denain Qual | 2018/07/02 08:00 | Chihiro Muramatsu v Anna Danilina | 4-6,2-6 |
| ITF Women Denain Qual | 2018/07/01 14:30 | Chihiro Muramatsu v Maneva Rakotomalala | 6-2,6-3 |
| ITF Women Perigueux | 2018/06/26 09:15 | Moyuka Uchijima v Chihiro Muramatsu | 3-6,6-1,6-2 |