Stadium: Court B1 Round: 28
| ITF Women Tsukuba WD | 2018/08/23 05:30 | Omae A / You X v Minokoshi M / Sema E | 6-1,6-2 |
| ITF Women Tsukuba WD | 2018/08/22 03:50 | Omae A / You X v Akita S / Inoue A | 6-4,7-5 |
| ITF Women Tsukuba WD | 2018/08/23 05:50 | Furukawa/Terami v Lorbergs/Thamchaiwat | 6-4,6-3 |
| ITF Women Tsukuba WD | 2018/08/22 05:55 | Hsu/Kaji v Furukawa/Terami | 4-6,6-7 |