Stadium: Court 2 Round: 45 Ground: Hardcourt outdoor
| ITF Women Nonthaburi | 2018/07/20 05:45 | Hiroko Kuwata v Kai-Lin Zhang | 6-1,2-6,5-7 |
| WTA Hiroshima | 2018/09/10 04:55 | Amanda Anisimova v Hiroko Kuwata | 6-3,6-2 |
| WTA Hiroshima | 2018/09/09 09:35 | Hiroko Kuwata v Harriet Dart | 6-4,7-5 |
| WTA Hiroshima | 2018/09/09 05:20 | Hiroko Kuwata v Mai Minokoshi | 6-1,6-7,6-3 |
| ITF Women Tsukuba | 2018/08/23 00:30 | Hiroko Kuwata v Chihiro Muramatsu | 6-7,2-6 |
| 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 Hiroshima | 2018/09/09 06:30 | Kai-Lin Zhang v Valeria Savinykh | 3-6,7-5,4-6 |
| ITF Women Nanao | 2018/08/30 03:00 | Kai-Lin Zhang v Akiko Omae | 1-6,3-6 |
| ITF Women Tsukuba | 2018/08/26 02:00 | Kai-Lin Zhang v Xiyu Wang | 6-3,5-7,5-7 |
| ITF Women Tsukuba | 2018/08/25 01:00 | Kai-Lin Zhang v Nagi Hanatani | 6-4,7-5 |
| ITF Women Tsukuba | 2018/08/24 01:00 | Kai-Lin Zhang v Erika Sema | 6-2,6-3 |
| ITF Women Tsukuba | 2018/08/21 03:00 | Kai-Lin Zhang v Kumi So | 6-2,7-5 |
| ITF Women Guiyang | 2018/08/17 05:20 | Jovana Jaksic v Kai-Lin Zhang | 6-1,6-2 |
| ITF Women Guiyang | 2018/08/15 04:50 | Ying Zhang v Kai-Lin Zhang | 4-6,2-6 |