16:35 CET - Jannik Sinner has absolutely stormed into the final in Vienna, beating Alex De Minaur 6-3, 6-4 in under an hour and a half in the Austrian capital.
With his 47th win of the year, the Italian moves into his eighth final of the year, and now has 20 victories on indoor hard courts in a row.
14:50 CET - Today's ATP action is about to start, and it's starting in style, with Jannik Sinner taking on Alex De Minaur in the first Vienna semi-final.
Over in Basel, young star Joao Fonseca is looking to reach the biggest final of his career yet in his clash with Jaume Munar.
Let the games begin!
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In the other semi-final in Japan, Elena Rybakina has withdrawn because of problems with her back, meaning Linda Noskova is through to tomorrow's showpiece.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!