Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| WTA Guadalajara - Damdubbel | 2019/03/13 02:45 | Kato/Ninomiya v Arruabarrena/Kania | 6-2,4-6,10-6 |
| WTA Indian Wells - Damdubbel | 2019/03/08 19:00 | Kato/Ninomiya v Atawo/Srebotnik | 3-6,1-6 |
| WTA Dubai - Damdubbel | 2019/02/19 11:15 | Kato/Ninomiya v Hsieh/Strycova | 3-6,2-6 |
| WTA Dubai - Damdubbel | 2019/02/17 09:45 | Han/Niculescu v Kato/Ninomiya | 3-6,1-6 |
| WTA Doha - Damdubbel | 2019/02/13 16:00 | Groenefeld/Schuurs v Kato/Ninomiya | 6-4,6-3 |
| Fed Cup 2019 | 2019/02/10 07:20 | Kato/Ninomiya v Garcia-Perez/Martinez Sanchez | 1-6,3-6 |
| WTA Hua Hin - Damdubbel | 2019/01/30 09:00 | Kato/Ninomiya v Blinkova/Wang | 2-6,2-6 |
| Australian Open - Damer - Damdubbel | 2019/01/16 00:00 | Hibino/Krawczyk v Kato/Ninomiya | 3-6,6-4,6-3 |
| WTA Guadalajara - Damdubbel | 2019/03/13 01:00 | Fichman/Jani v Olmos/Pigossi | 7-5,6-2 |