Stadium: Cancha 2 Round: 26 Ground: Hardcourt outdoor
| WTA Miami WD | 2019/03/22 15:00 | Kato/Ninomiya v Aoyama/Marozava | 3-6,4-6 |
| WTA Guadalajara WD | 2019/03/15 00:00 | Kato/Ninomiya v Sanchez/Stollar | 3-6,5-7 |
| WTA Guadalajara WD | 2019/03/14 01:25 | Kato/Ninomiya v Fichman/Jani | 6-4,3-6,10-4 |
| WTA Guadalajara WD | 2019/03/13 02:45 | Kato/Ninomiya v Arruabarrena/Kania | 6-2,4-6,10-6 |
| WTA Indian Wells WD | 2019/03/08 19:00 | Kato/Ninomiya v Atawo/Srebotnik | 3-6,1-6 |
| WTA Dubai WD | 2019/02/19 11:15 | Kato/Ninomiya v Hsieh/Strycova | 3-6,2-6 |
| WTA Dubai WD | 2019/02/17 09:45 | Han/Niculescu v Kato/Ninomiya | 3-6,1-6 |
| WTA Doha WD | 2019/02/13 16:00 | Groenefeld/Schuurs v Kato/Ninomiya | 6-4,6-3 |