Shanghai managed to turn a six-point deficit after the first quarter into a 10-point lead at the end of the first half, and never looked back afterwards.
Domenec Torrent's men are now fourth in the 20-team standings, three points behind leader Atletico Mineiro.
The Czech player found rhythm just in time to win nine consecutive games to finally secure her 90th career main draw victory on clay.
Koeman had made no secret that he wanted the duo and the failure to sign Garcia leaves Barca looking especially lightweight in central defense, where they only have Gerard Pique and Clement Lenglet, with Ronald Araujo to provide cover.
Defending champion Nadal was one of the "victims" of this epic clash, as his quarterfinals match against Sinner, which was scheduled as the last match of the day,had to start later and ended in the early hours of Wednesday.
"It's because I did a lot of things well. I played more aggressively than the previous days. I went to the net more often, and I hit a lot of winners," added the 12-time French Open champion, who needed only one hour and 35 minutes to see off his opponent.
Zhao Xuetong had 19 points for Sichuan, Hu Yueming and Gao Song each got 17 points. Shen Yi contributed 18 points and eight assists for Dongguan.
PARIS, Oct. 7 (Xinhua) -- Argentina's Diego Schwartzman finally overcame the hurdle of the quarterfinals at a major after three attempts, as the 28-year-old on Tuesday edged two-time Roland Garros finalist and newly-crowned US Open champion, Dominic Thiem 7-6 (1), 5-7, 6-7 (6), 7-6 (5), 6-2 to book a spot in the French Open semifinals.
Falcao, 34, has found his scoring touch for Galatasaray with three goals from the opening three rounds of the Turkish Super Lig.
Khachanov won the pair's previous encounter in Paris - at 2018 Paris Masters, when the Russian claimed a straight-set win in the final to clinch the biggest title of his career until now.
With the result, Bayern Munich moves to the fourth position meanwhile Hertha Berlin suffered its second defeat to slip to the 13th position.