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