Whatever happens at the WTA Finals, Ashleigh Barty will end 2019 as world number one after beating Belinda Bencic in three sets.
Naomi Osaka, Petra Kvitova and Belinda Bencic will be top seed Ashleigh Barty's opponents in the Red Group in Shenzhen.
After losing in the last 16 of the US Open, Japan's Naomi Osaka has bounced back with two tournament wins in a row.
Ashleigh Barty is the final obstacle standing in the way of a tired but in-form Naomi Osaka at the China Open.
Ashleigh Barty and Naomi Osaka were victorious against Kiki Bertens and Caroline Wozniacki in their respective China Open last-four matches.
Bianca Andreescu's winning streak was finally ended by Naomi Osaka, who was keen to send a message at the China Open.
Naomi Osaka will take on Bianca Andreescu for a place in the semi-finals of the China Open.
Having not lost a set since parting from coach Jermaine Jenkins, Naomi Osaka is reaping the benefits of working with her father.
Naomi Osaka made it six wins in succession as world number one Ashleigh Barty and defending champion Caroline Wozniacki triumphed in China.
=China Open favourites Naomi Osaka, Simona Halep and Elina Svitolina ensured their progression, with Venus Williams also heading through.