Luo Xinyu bagged 18 points for Jiangsu, who also got 14 points apiece from Xu Chenyan and Jiang Jiayin.
It was not the only stunning result of the weekend. Tottenham inflicted a humiliating 6-1 defeat on Manchester United at Old Trafford as the home side's defense imploded in a disastrous performance that Spurs exploited to the full.
Houssem Aouar converted a penalty in the 28th minute to equalize for the hosts after Melvin Bard was taken down by Alvaro Gonzalez.
"I don't know what happened actually, I felt like I was playing perfectly, I was so focused the whole match, even I am surprised that I can do that," said the 54th-ranked Swiatek, who fired 30 winners and won 81 percent of her first-serve to wrap up the victory.
Eibar won for the first time this season as Kevin Rodrigues' 91st minute goal gave it a 2-1 triumph away at Valladolid in a frantic game on Saturday.
Mainz failed to put up any resistance while Union relentlessly tripled their lead after Marvin Friedrich headed home Christopher Trimmel's free-kick in the 63rd minute for 3-0.
"It's been long ride definitely. Everything came to my mind when I had my whole family, people who I loved to help me through the tough, tough time," said Kvitova. "I was just playing in the Philippe Chatrier, it was such nice to win the match and to be in the quarterfinal."
MADRID, Oct. 4 (Xinhua) -- FC Barcelona dropped its first points of the season when it was held to a 1-1 draw in the Camp Nou Stadium by Sevilla on Sunday night.
The previous best for the No.7 seed in Paris was the semifinals in 2012 when she lost to eventual champion Maria Sharapova 6-3, 6-3.
Shanghai's defense played a decisive role in their 112-98 victory over Shaanxi despite the latter's crazy 3-pointer shooting performance
France's Clara Burel hits a return during the women's singles third round match against China's Zhang Shuai in the French Open tennis tournament 2020 at Roland Garros in Paris, France, Oct. 3, 2020. (Xinhua/Gao Jing)