Wang was well beaten by world number two Caroline Wozniacki in the China Open semi-finals, going down 6-1, 6-3, and has been carrying a thigh injury.
US Open champion Naomi Osaka has pulled out of this week's Hong Kong Open to prevent aggravating a slight back injury, organizers said on Sunday.
Osaka, who was attempting to reach a third straight final after NY and Tokyo's Pan Pacific Open, was unhappy with her behaviour in Friday's quarter-final victory over Zhang Shuai.
The 45th-ranked Zhang - with the crowd on her side - raced into an early lead against an unusually erratic Osaka, who had won 24 of her previous 28 games.
Anastasija Sevastova beat US Open champion Naomi Osaka 6-4, 6-4 on Saturday to reach the China Open final.
"Then after number one in the world, I wanted to win a Slam, then I wanted to lift trophies".
Japan's Osaka struggled to find her rhythm throughout the contest, making 66 unforced errors, and had tears in her eyes midway through the second set with the match slipping away. "I needed to really work it, to work hard, win the points". "I'm just like, 'Oh, I guess I have to do more, to be better'".
Following the match, the Japanese player praised her opponent saying, "It was really hard to play against her here".
The time off allowed her body to mend and she returned to the sport in January 2015.
"I also want to thank and apologise to Anastasija for today". In the men's quarter-finals, the Italian Fabio Fognini continued his march towards a fourth title of the season with a 6-4, 6-4 victory over Marton Fucsovics of Hungary.