16:27 CET - Novak Djokovic is into the last eight in Shanghai after battling through a second-set wobble and the humid conditions to see off the challenge of Jaume Munar, 6-3, 5-7, 6-2.
14:37 CET - Second seed Iga Swiatek has eased into the next round in Wuhan, with the Pole dismantling Marie Bouzkova 6-1, 6-1 in just 79 minutes.
13:16 CET - Linda Noskova has continued her fine recent form with a hard-fought 6-4, 4-6, 7-6(2) victory over Yulia Putintseva in Wuhan.
12:40 CET - Holger Rune is into the quarter-finals at the Shanghai Masters, with the Dane battling past big-serving Frenchman Giovanni Mpetshi Perricard in three sets, 6-4, 6-7(7), 6-3.
11:24 CET - Shuai Zhang has pulled off a big upset in Wuhan, with the home favourite defeating 14th seed Emma Navarro 6-2, 2-6, 6-3.
Elsewhere, Belinda Bencic is also through to the second round after a convincing 6-2, 6-2 triumph over Donna Vekic.
10:49 CET - Rebecca Sramkova and Magdalena Frech have progressed in China after impressive three-set victories over Anna Kalinskaya and Veronika Kudermetova, respectively.
09:43 CET - Karolina Muchova is the latest woman through in Wuhan, with the Czech 12th seed coming from a set down to defeat Marta Kostyuk 2-6, 6-2, 6-4.
Meanwhile, in Shanghai, Zizou Bergs has moved into the quarter-finals after saving two match points to secure a thrilling 3-6, 7-5, 7-6(8) triumph over Gabriel Diallo.
09:12 CET - Ann Li has advanced in Wuhan after her opponent Emma Raducanu was forced to retire while trailing 6-1, 4-1.
08:37 CET - Naomi Osaka is through to the second round in Wuhan, coming out on top in a three-set epic to defeat Leylah Fernandez 4-6, 7-5, 6-3, while Sofia Kenin and Jaqueline Cristian have also progressed.
07:20 CET - Hello and welcome to Flashscore's coverage of today's tennis!
The action is already well underway in Wuhan, where Liudmila Samsonova has booked her spot in the next round, easing past Emiliana Arango 6-1, 7-5.
In Shanghai, meanwhile, the first four quarter-final spots are up for grabs today, with Novak Djokovic among those looking to move into the last eight.
He faces Jaume Munar at 12:30 CET, following the conclusions of Gabriel Diallo vs Zizou Bergz and Giovanni Mpetshi Perricard vs Holger Rune.