Stadium: Kita-Kyushu Sogo Gymnastic Hall Round: 27
| WTA Hua Hin WD | 2019/01/30 09:00 | Kato/Ninomiya v Blinkova/Wang | 2-6,2-6 |
| Australian Open Women WD | 2019/01/16 00:00 | Hibino/Krawczyk v Kato/Ninomiya | 3-6,6-4,6-3 |
| WTA Sydney WD | 2019/01/10 04:25 | Krunic/Siniakova v Kato/Ninomiya | 7-5,6-2 |
| WTA Sydney WD | 2019/01/09 01:00 | Kichenok/Strycova v Kato/Ninomiya | 6-1,3-6,8-10 |
| WTA Sydney WD | 2019/01/08 02:00 | Kato/Ninomiya v Aoyama/Marozava | 6-3,6-4 |
| WTA Brisbane WD | 2018/12/31 03:50 | Kato/Ninomiya v Chan/Chan | 1-6,2-6 |
| WTA Zhuhai WD | 2018/11/03 05:30 | Kato/Ninomiya v Jiang/Yang | 3-6,4-6 |
| WTA Zhuhai WD | 2018/11/01 05:30 | Kato/Ninomiya v Kichenok/Kichenok | 4-6,6-1,7-10 |
| Billie Jean King Cup | 2018/04/22 12:15 | Garcia-Perez/Martinez Sanchez v C Royg/Gonzalez | 3-6,2-6 |
| 2018 Fed Cup | 2018/02/11 18:35 | Cocciaretto/Paolini v Garcia-Perez/Martinez Sanchez | 4-6,3-6 |