Stadium: Dome Round: 26 Ground: Hardcourt outdoor
| WTA Hiroshima WD | 2018/09/12 08:45 | Kobori/Shimizu v Imanishi/Rosolska | 6-3,5-7,10-12 |
| ITF Women Nanao WD | 2018/09/01 07:30 | Kobori/Shimizu v Morisaki/Nishimoto | 2-6,3-6 |
| ITF Women Nanao WD | 2018/08/31 08:00 | Kobori/Shimizu v Inoue/Omae | 6-1,2-6,14-12 |
| ITF Women Nanao WD | 2018/08/30 05:40 | Kobori/Shimizu v Koshiishi/Miyamoto | 6-2,6-7,10-1 |
| ITF Women Nanao WD | 2018/08/28 04:30 | Kobori/Shimizu v Akiyama/Hsieh | 6-0,6-2 |
| WTA Nanchang WD | 2018/07/28 09:00 | Lu/You v Kobori/Shimizu | 6-2,7-6 |
| WTA Nanchang WD | 2018/07/26 11:30 | Kobori/Shimizu v Duan/Han | 6-1,1-6,14-12 |
| WTA Nanchang WD | 2018/07/25 09:00 | Lu/Raina v Kobori/Shimizu | 3-6,6-4,8-10 |
| WTA Hiroshima WD | 2018/09/16 05:15 | Kato/Ninomiya v Hozumi/Zhang | 2-6,4-6 |
| WTA Hiroshima WD | 2018/09/14 06:45 | Kato/Ninomiya v Savinykh/Sorribes Tormo | 7-6,6-4 |
| WTA Hiroshima WD | 2018/09/13 07:55 | Kato/Ninomiya v Diyas/Zheng | 5-7,6-2,10-5 |
| WTA Hiroshima WD | 2018/09/13 04:55 | Kato/Ninomiya v Perez/Rodionova | 6-7,6-3,10-6 |
| US Open Women WD | 2018/08/30 15:00 | Kato/Ninomiya v Broady/Collins | 3-6,4-6 |
| WTA Montreal WD | 2018/08/08 16:30 | Kato/Ninomiya v Chan/Makarova | 1-6,3-6 |
| WTA Montreal WD | 2018/08/07 22:10 | Kato/Ninomiya v Kichenok/Rodionova | 7-5,4-6,10-7 |
| WTA San Jose WD | 2018/08/04 22:45 | Chan/Peschke v Kato/Ninomiya | 6-1,6-4 |