Stadium: Centre Court Round: 26
| ITF Women Gifu WD | 2018/05/03 06:30 | Fujiwara R / Naito Y v Kobori M / Kuwata H | 6-2,7-5 |
| ITF Women Gifu WD | 2018/05/01 05:50 | Takoi S / Ukai Y v Kobori M / Kuwata H | 2-6,2-6 |
| ITF Women Fukuoka Qual WD | 2018/05/07 05:30 | Kaji H / Shimizu A v Koike M / Kusano K | 6-1,6-2 |
| ITF Women Yokohama WD | 2018/03/09 08:30 | Kaji H / Shimizu A v Robson L / Stollar F | 4-6,4-6 |
| ITF Women Yokohama WD | 2018/03/08 10:15 | Okamura K / Okuno A v Kaji H / Shimizu A | 4-6,1-6 |
| Yokohama, Doubles Qualifying W-WITF-JPN-01B | 2018/03/06 03:55 | Kaji H / Shimizu A v Chen J / Wu M X | 6-4,6-4 |