With 1,900 points on offer in Wuhan and Bejing, here's how the China Double could make or break the Porsche Race to Singapore.
Sloane Stephens will face her Wimbledon conqueror Donna Vekic again at the Toray Pan Pacific Open next week, while Naomi Osaka will return to her home tournament as a Grand Slam champion for the first time. Scroll down for full draw.
Defending champion Jelena Ostapenko is projected to face Hiroshima winner Hsieh Su-Wei in the KEB Hana Bank Korea Open quarterfinals, while second seed Kiki Bertens has a tough opener in Luksika Kumkhum.
Hsieh Su-Wei lifted her third career trophy at the Hana-Cupid Japan Women's Open after a straight-sets defeat of 17-year-old Amanda Anisimova.
No.8 seed Pauline Parmentier picked up multiple titles in one season for the first time, adding to her 2018 trophy haul by winning the Coupe Banque Nationale présentée par IGA over qualifier Jessica Pegula.
The Wimbledon champion will make her fifth appearance at the prestigious WTA Finals, where she was a finalist in 2016. The German is the second of eight singles players to qualify for the year-end showpiece.