Stadium: Centre Court Round: 26
| ITF Women Gifu WD | 2018/05/03 06:30 | Fujiwara/Naito v Kobori/Kuwata | 6-2,7-5 |
| ITF Women Gifu WD | 2018/05/01 05:50 | Takoi/Ukai v Kobori/Kuwata | 2-6,2-6 |
| ITF Women Fukuoka Qual WD | 2018/05/07 05:30 | Kaji/Shimizu v Koike/Kusano | 6-1,6-2 |
| ITF Women Yokohama WD | 2018/03/09 08:30 | Kaji/Shimizu v Robson/Stollar | 4-6,4-6 |
| ITF Women Yokohama WD | 2018/03/08 10:15 | Okamura/Okuno v Kaji/Shimizu | 4-6,1-6 |
| ITF Women Yokohama Qual WD | 2018/03/06 03:55 | Kaji/Shimizu v Chen/Wu | 6-4,6-4 |