Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| WTA Guadalajara WD | 2019/03/13 02:45 | Kato M / Ninomiya M v Arruabarrena/Kania | 6-2,4-6,10-6 |
| WTA - Indian Wells - Doubles Femmes | 2019/03/08 19:00 | Kato M / Ninomiya M v Atawo R / Srebotnik K | 3-6,1-6 |
| WTA - Dubaï - Doubles Femmes | 2019/02/19 11:15 | Kato M / Ninomiya M v Hsieh / Strycova | 3-6,2-6 |
| WTA - Dubaï - Doubles Femmes | 2019/02/17 09:45 | Han X / Niculescu M v Kato M / Ninomiya M | 3-6,1-6 |
| WTA - Doha - Doubles Femmes | 2019/02/13 16:00 | Groenefeld A L / Schuurs D v Kato M / Ninomiya M | 6-4,6-3 |
| Fed Cup, Groupe Mondial | 2019/02/10 07:20 | Kato M / Ninomiya M v Garcia Perez G / Martinez Sanchez M | 1-6,3-6 |
| 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 Guadalajara WD | 2019/03/13 01:00 | Fichman S / Jani R-L v Olmos G / Pigossi L | 7-5,6-2 |