10:18 CET - After beating Aryna Sabalenka in the last round, Nikola Bartunkova has produced another upset in Beijing to beat fellow Czech player and seventh seed Karolina Muchova in the quarter-finals, in a dominant style. In the biggest win of her career, Bartunkova converted five out of sixteen break points after putting constant pressure on Muchova's serve.
09:20 CET - The results are coming in fast on a busy day at the Shanghai Masters. And it has gone to plan this morning for both Hubert Hurkacz and Matteo Arnaldi, who won in straight sets against Australians James Duckworth and Bernard Tomic, respectively, to book their places in the second round.
Hurkacz is now on a seven-match winning streak in Shanghai and will next face Novak Djokovic, who should be highly confident after winning the title in Beijing last week.
Continue to follow the first-round action here.
07:40 CET - Good morning and welcome back to our live coverage of the Beijing Open and Shanghai Masters!
The WTA 1000 event in Beijing has reached the quarter-final stage, with several of the world's top players looking to reach the last four.
Up first at 09:00 CET is an all-Czech clash, as Wimbledon finalist and world number eight Karolina Muchova takes on Aryna Sabalenka's conqueror, Nikola Bartunkova.
The pair have never played each other before, but Muchova, who won a maiden 1000 title at the start of the year in Doha, will be the favourite to reach the semi-finals. For Bartunkova, it is her first appearance in the quarter-finals of a 1000 event.
That will be followed by another meeting between two players from the same nation - Russia's Mirra Andreeva and Ekaterina Alexandrova.
Interestingly, Alexandrova leads the head-to-head 2-0 over the Roland Garros champion, but they have never played on a hard court before.
Over to the ATP Shanghai Masters and it is another action-packed day of first-round action. The first match of the day has just concluded, as Stefanos Tsitsipas made light work of Kimmer Coppejans, winning in just over an hour and avoiding any embarrassment.
It is another good opportunity in Shanghai for the Greek to get his career back on track after an encouraging run to the fourth round at the US Open.
Still to come this morning in Shanghai, big-name players such as Hubert Hurkacz, Matteo Arnaldi and later on Cameron Norrie are all in first-round action.
Follow all the first-round action from the ATP Shanghai Masters.