Stadium: Court 1 Round: 28
| 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 |
| ITF Women Yokohama WD | 2018/03/08 08:20 | Fujiwara/Galfi v Robson/Stollar | 6-3,4-6,5-10 |
| ITF Women Yokohama WD | 2018/03/07 04:55 | Chiang/Wachaczyk v Robson/Stollar | 3-6,3-6 |