Real Sociedad had a comfortable 3-0 win at home to Getafe to end a run of poor results at home since the return of football in June and to momentarily go top of the table, although that lead didn't last for long.
Kvitova went into the match quickly as she broke her Chinese opponent twice to surge to a 4-0 lead in the opening set, before serving for the set in the eighth game.
Beijing, whose national team duo of Shao Ting and Gao Song had joined Sichuan during the offseason, lost to Jiangsu on Thursday. They regained a fine form on Sunday, with four players' double-figure points leading the way. Qi Yu posted a game-high 20 points. Shi Xiufeng and Qi Site chipped in 14 and 13 respectively.
Nadal will face Sebastian Korda, the son of 1998 Australian Open winner Petr Korda, in the next round. The American youngster secured his first appearance in a Grand Slam round of 16 by beating fellow qualifier Pedro Martinez 6-4, 6-3, 6-1 to advance.
"Scoring goals gives us confidence. It is a great victory," said PSG head coach Thomas Tuchel.
Han Xu got 13 points and 10 rebounds for Xinjiang who had another four players scoring in the double-digits. Enditem
"I did not want to travel far and decided to enjoy my vacation in a more leisurely way," she said. "Kart racing helps me releave the pressure of work."
Wuhan did enough work to contain Xinjiang after the tip-off, but Xinjiang pulled away with a 17-2 spurt before the halftime for a 38-25 lead.
AC Milan continued its good forms as the Rossoneri beat Spezia 3-0, including a Rafael Leao brace.
Sevilla opened the scoring in the 7th minute when Luuk de Jong fired home with his left foot after Barca failed to deal with a corner, but Barca levelled barely a minute later when Jesus Navas was unable to clear Jordi Alba's ball into the area, allowing Coutinho to pick his spot.
"The Porto footballer is prevented from joining the squad due to the protocols and sanitary regulations established by local authorities in Portugal," read an FCF statement.