Stadium: Court C1 Round: 28
| ITF Women Tsukuba WD | 2018/08/23 05:00 | Arakawa H / Muramatsu C v Bains/Kuwata | 6-7,2-6 |
| ITF Women Tsukuba WD | 2018/08/21 03:45 | Ayukawa M / Okamura K v Bains/Kuwata | 3-6,3-6 |
| ITF Women Tsukuba WD | 2018/08/23 05:30 | Nishimoto M / Ozeki M v Inoue A / Kobori M | 6-3,6-1 |
| ITF Women Tsukuba WD | 2018/08/21 02:15 | Nishimoto M / Ozeki M v Inose M / Kawamura M | 6-1,6-2 |