At ITC Tsuyoshi Tennis Center
Osaka, Japan
Purse: $823,000 (Premier)
Surface: Hard-Indoor
First Round

Madison Keys (5), United States, def. Daria Kasatkina, Russia, 6-3, 6-4.

Hsieh Su-wei, Taiwan, def. Garbiñe Muguruza, Spain, 3-6, 7-6 (1), 6-1.

Varvara Flink, Russia, def. Nao Hibino, Japan, 6-4, 7-5.

Donna Vekic, Croatia (7), def. Caroline Garcia, France, 7-5, 6-2.

Yulia Putintseva, Kazakhstan, def. Katarzyna Kawa, Poland, 6-4, 7-6 (4).

Misaki Doi, Japan, def. Kristina Mladenovic, France, 6-1, 6-2.

First Round

Eri Hozumi and Makoto Ninomiya, Japan, def. Lyudmyla Kichenok, Ukraine, and Alison Riske, United States, 4-6, 6-4, 10-0.

Chan Hao-ching and Latisha Chan (2), Taiwan, def. Monique Adamczak, Australia, and Han Xinyun, China, 6-1, 6-0.

Shuko Aoyama and Ena Shibahara, Japan, def. Darija Jurak, Croatia, and Katarina Srebotnik (4), Slovenia, 6-3, 6-1.

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