Stadium: Stadium Round: 1 Ground: Hardcourt indoor
| WTA Zhuhai WD | 2018/11/01 05:30 | Kato/Ninomiya v Kichenok/Kichenok | 4-6,6-1,7-10 |
| WTA Hong Kong WD | 2018/10/10 13:05 | Stosur/Zhang v Kato/Ninomiya | 6-4,7-6 |
| WTA Hong Kong WD | 2018/10/08 10:30 | Ng/Svitolina v Kato/Ninomiya | 1-6,3-6 |
| WTA Beijing WD | 2018/09/29 10:30 | Kichenok/Srebotnik v Kato/Ninomiya | 7-6,6-4 |
| WTA Wuhan WD | 2018/09/25 10:10 | Hsieh/Mattek-Sands v Kato/Ninomiya | 6-2,6-2 |
| WTA Tokyo WD | 2018/09/22 07:00 | Hlavackova/Strycova v Kato/Ninomiya | 4-6,4-6 |
| WTA Tokyo WD | 2018/09/21 05:00 | Kato/Ninomiya v Dabrowski/Wu | 7-6,6-0 |
| WTA Tokyo WD | 2018/09/20 04:15 | Kato/Ninomiya v Kichenok/Srebotnik | 6-4,2-6,10-7 |
| WTA Zhuhai WD | 2018/10/30 04:30 | Kichenok/Kichenok v Jiang/Yang | 7-6,3-6,11-9 |