16:10 CET - Elsewhere in Basel, another Canadian, Denis Shapovalov, has booked his spot in the next round with a dominant 7-6 (3), 6-2 win against Valentin Royer.
16:05 CET - Another very impressive display by Felix Auger-Aliassime as the Canadian had an astonishing 28 aces en route to a 7-6 (2), 7-6 (2) victory against Marin Cilic in Basel.
15:00 CET - Katie Volynets and Shuai Zhang have both claimed wins to set up a quarter-final meeting in Guangzhou.
12:32 CET - Sofia Kenin has survived a real test from 17-year-old Wakana Sonobe, with the American defeating the home favourite 3-6, 6-1, 7-6(2) to move into the Tokyo last eight.
11:24 CET - Caty McNally is the next player to progress in Guangzhou, clinching a hard-fought 6-4, 4-6, 6-3 win over Australian Ajla Tomljanovic.
11:09 CET - Billie Jean King Cup hero Elisabetta Cocciaretto is through to the Guangzhou quarter-finals after a 6-3, 2-6, 6-3 victory over Xiyu Wang.
08:45 CET - The next player to book a quarter-final spot in Tokyo is third seed Ekaterina Alexandrova after she impressively downed Jaqueline Cristian 6-1, 6-2 in just over an hour.
07:30 CET - Good morning and welcome back to another intriguing day on the WTA and ATP tours.
There are some overnight results to bring you from Tokyo as Belinda Bencic defeated Varvara Gracheva 6-3, 6-4 before second seed Elena Rybakina won 6-4, 6-3 against Leylah Fernandez to cruise into the quarter-finals.
