Williams had to come back from a set and a break down to storm to a 4-6, 6-3, 6-2 win against Bulgaria's Tsvetana Pironkova while Azarenka dropped just one game against 16th seed Elise Mertens of Belgium to seal a spot in the semifinals.
In Sao Paulo, Palmeiras were held to a 2-2 home draw by Sport Recife. Willian and Ze Rafael struck first-half goals for the hosts while Iago Maidana and Luis Mugni were on target for Sport.
Luneng were dealt a blow in the 20th minute as Marouane Fellaini picked up an injury, making way for Roger Guedes.
The truncated 2020 CSL campaign saw 16 teams split into two groups, each group of eight teams to be based in the same hotel, to play a tournament style league behind closed doors. Enditem
Former Dutch international Robben celebrated his much-anticipated return to the Eredivisie after an absence of 16 years and 155 days. The 36-year-old resumed his career at FC Groningen this summer after having retired for one season. His comeback at home against PSV was disappointing as he limped off injured after half an hour.
Marcos Alves broke the deadlock for Hebei in the 15th minute through a header after receiving Yin Hongbo's long pass.
In the other game in the Meizhou division on Sunday, Meizhou Hakka beat Liaoning Shenyang Urban 2-0.
The Champions League finalists kicked off their league title defence on Thursday with a shock 1-0 defeat at newly-promoted Lens, in a game which Tuchel fielded several young players such as 18-year-old league debutants Kays Ruiz-Atil and Arnaud Kalimuendo and 20-year-old goalkeeper Marcin Bulka, who was just making his second appearance for the first team.
"I was very concentrated when playing the first match. However, I felt a little tired in the mixed doubles. We tried to exert our strengths on the court to play against our well-performed rivals. The 11-point competition system is too difficult," said Zheng.
BERLIN, Sept. 14 (Xinhua) -- Borussia Dortmund progressed into the second round of the German Cup after moving 5-0 past third division outfit Duisburg on Monday.
But he tightened up again when it came time to serve for the championship, allowing Thiem to break back.