Stadium: Court 3 Round: 28 Ground: Hardcourt outdoor
| ITF Women Kashiwa WD | 2018/04/05 06:50 | Chan/Raina v Hayashi/Kobori | 2-6,2-6 |
| ITF Women Kashiwa WD | 2018/04/04 05:00 | Abe/Matsumoto v Hayashi/Kobori | 2-6,5-7 |
| ITF Women Kofu WD | 2018/03/31 03:35 | Hayashi/Kobori v Gao/Kumkhum | 0-6,6-2,4-10 |
| ITF Women Kofu WD | 2018/03/30 04:50 | Hayashi/Kobori v Kaji/Yoshitomi | 6-0,6-3 |
| ITF Women Kofu WD | 2018/03/29 06:35 | Tere-Apisah/Wachaczyk v Hayashi/Kobori | 2-6,7-6,6-10 |
| ITF Women Kofu WD | 2018/03/28 06:35 | Hayashi/Kobori v Arakawa/Shimizu | 6-3,6-4 |
| WTA Tokyo WD | 2017/09/11 06:00 | Hayashi/Kobori v Adamczak/Sanders | 2-6,0-6 |
| ITF Women Kashiwa WD | 2018/04/05 04:50 | Okamura/Okuno v Silich/Thandi | 6-4,6-7,10-1 |
| ITF Women Kashiwa WD | 2018/04/04 06:50 | Omae/Plipuech v Okamura/Okuno | 2-6,5-7 |
| ITF Women Kofu WD | 2018/03/29 05:20 | Okamura/Okuno v Kajitani/Nishimoto | 3-6,6-3,7-10 |
| ITF Women Kofu WD | 2018/03/28 04:25 | Kang/Minokoshi v Okamura/Okuno | 2-6,4-6 |
| 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 |