14:23 CET - In a big disappointment for home fans in Guangzhou, China's Shuai Zhang has retired from her semi-final while 5-2 down in the first set, meaning second seed Ann Li of the USA moves into the final.
12:42 CET - Lulu Sun is through to the showpiece event in Guangzhou, with the New Zealander battling through a tight second set to beat Claire Liu 6-0, 7-6(3).
08:29 CET - Belinda Bencic has booked her spot in tomorrow's Tokyo final after recovering from a second-set wobble to defeat Sofia Kenin 7-6(5), 3-6, 6-2.
07:43 CET - Fifth seed Belinda Bencic and American Sofia Kenin are currently on court for their semi-final clash in Tokyo, with the Swiss player in the driving seat after taking the opening set.
Follow the match with Flashscore here.
In the other semi-final in Japan, Elena Rybakina has withdrawn because of problems with her back, meaning Linda Noskova is through to tomorrow's showpiece.
07:30 CET - Good morning and welcome to our coverage of today's tennis!