Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF Women Toyota WD | 2018/03/15 05:35 | Namigata/Sema v Okamura/Okuno | 6-4,6-7,10-8 |
| ITF Women Toyota WD | 2018/03/13 03:15 | Okamura/Okuno v Furuya/Sano | 6-0,6-4 |
| ITF Women Yokohama WD | 2018/03/08 10:15 | Okamura/Okuno v Kaji/Shimizu | 4-6,1-6 |
| ITF Women Yokohama WD | 2018/03/06 06:05 | Nishimoto/Oshino v Okamura/Okuno | 2-6,6-4,14-16 |