Stadium: Dome Round: 27 Ground: Hardcourt outdoor
| WTA Tokyo WD | 2018/09/19 04:45 | Kobori/Shimizu v Kato/Ninomiya | 4-6,3-6 |
| 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 Tokyo WD | 2018/09/19 02:00 | Kichenok/Srebotnik v Chan/Yang | 6-3,6-4 |
| WTA Tokyo WD | 2017/09/18 03:35 | Kasatkina/Saville v Kichenok/Srebotnik | 1-6,7-5,10-7 |
| WTA Tokyo WD | 2017/09/13 06:55 | Mertens/Soylu v Kichenok/Srebotnik | 7-6,6-3 |