Stadium: Kita-Kyushu Sogo Gymnastic Hall Round: 27
| WTA - Hua Hin - Doubles Femmes | 2019/01/30 09:00 | Kato M / Ninomiya M v Blinkova A / Wang Y | 2-6,2-6 |
| Open d'Australie - Double Femmes | 2019/01/16 00:00 | Hibino N / Krawczyk D v Kato M / Ninomiya M | 3-6,6-4,6-3 |
| WTA Sydney WD | 2019/01/10 04:25 | Krunic A / Siniakova K v Kato M / Ninomiya M | 7-5,6-2 |
| WTA Sydney WD | 2019/01/09 01:00 | Kichenok N / Strycova B v Kato M / Ninomiya M | 6-1,3-6,8-10 |
| WTA Sydney WD | 2019/01/08 02:00 | Kato M / Ninomiya M v Aoyama S / Marozava L | 6-3,6-4 |
| Brisbane, Australie, Doubles | 2018/12/31 03:50 | Kato M / Ninomiya M v Chan H-C / Chan L | 1-6,2-6 |
| WTA Zhuhai WD | 2018/11/03 05:30 | Kato M / Ninomiya M v Jiang X / Yang Z | 3-6,4-6 |
| WTA Zhuhai WD | 2018/11/01 05:30 | Kato M / Ninomiya M v Kichenok/Kichenok | 4-6,6-1,7-10 |
| Billie Jean King Cup | 2018/04/22 12:15 | Garcia Perez G / Martinez Sanchez M v Cepede Royg V / Gonzalez M | 3-6,2-6 |
| Fed Cup, Groupe Mondial | 2018/02/11 18:35 | Cocciaretto E / Paolini J v Garcia Perez G / Martinez Sanchez M | 4-6,3-6 |