On the Shanghai side, Zhou Yuyan had 11 points, and Han Xu bagged 10.
"I think I played a really good match. I was very aggressive. I knew from last year I had to change something, so I really wanted to be better than last year and definitely, I was today," said the world No. 2.
"We can feel that everything is fully prepared beforehand with an aim of offering us a safe environment to enjoy games," said Shao, who had joined Sichuan before the season.
FC Barcelona coach Ronald Koeman was left frustrated as the club failed to complete deals to bring central defender Alex Garcia and forward Memphis Depay to the club from Manchester City and Olympique Lyon respectively.
Stefanos Tsitsipas of Greece hits a return during the men's singles third round match against Aljaz Bedene of Slovenia in the French Open tennis tournament 2020 at Roland Garros in Paris, France, Oct. 3, 2020. (Photo by Aurelien Morissard/Xinhua)
"If you win 4-0, you have to be happy. We will analyse today's game in a couple of days but for now we are delighted. Today it was important to be effective when it mattered most," Union head coach Urs Fischer said.
Vanderlei Luxemburgo's men are now third in the 20-team Serie A standings, just two points behind leader Atletico Mineiro, who has a game in hand.
National team manager Oliver Bierhoff said the association depends on internationals' turnovers and will start a charm offensive to regain fans' trust.
"The match today I think we both play really well and a really great match. She played unbelievably good," said Zhang, who defeated Burel 6-3, 7-6(3) in the Strasbourg Open before coming to Paris.
Next up for Kvitova is Germany's Laura Segemund, who dispatched Spaniard Paula Badosa 7-5, 6-2 to advance. Enditem
Elche and Huesca drew a game between two newly promoted sides 0-0, although Huesca will feel they did enough to take all three points as Elche failed to shoot on target all game.