Jiangsu showed its well-balanced, attacking firepower, with seven players scoring in double figures, led by Sun Li's 18.
Tianjin maintained its tactical structure, and overwhelmed its opponent with a 14-2 run in the third set.
Alvaro Ordiozola will continue at right back after Dani Carvajal suffered a knee injury on Friday that will sideline him for a couple of months, while Ferland Mendy will likely return on the left after being rested in the narrow midweek win at home to Valladolid.
On the Shanghai side, Zhou Yuyan had 11 points, and Han Xu bagged 10.
"It was a very even match, perhaps more difficult than the result showed," said Djokovic, who is seeking for an 18th Grand Slam title.
He is also doubtful for Barca's next games, which are away to Getafe on October 17, their Champions League debut at home to Ferencvaros on October 20, and the first 'Clasico' of the season at home against Real Madrid five days later.
While predecessor Wagner could count on a seven-week-long preparation phase, only two weeks remain for Baum to get the team back on track, when Schalke faces Union Berlin on October 18 on home soil in the Bundesliga.
Next up for Halep is another 19-year-old youngster, Iga Swiatek of Poland, whom Halep defeated in the round of 16 here last year.
"They're the best team in the league, and proved it today," said Shandong coach Luka Sjekloca. Enditem
Due to the game behind closed doors against Turkey, the association has to shift its plans to hand out free tickets. Plans said all of the tickets approved by local health authorities are free but exclusively for locals in Northern-Rhine-Westphalia.
"In the second set and the third set, I had a lot of opportunities, also easy opportunities," said Schwartzman after his 20th victory of 2020. "That's why I was really upset, really angry with myself at that time ... when I was close to winning in those sets. I couldn't do it."