Alfaro was appointed Ecuador's head coach in August following the resignation of Jordi Cruyff.
"We found several problems during the tournament and we will strengthen training in the future," he added.
Jiangsu took to attacking the basket from the paint early on, before going up 20-9 on a 14-0 surge. Jiangsu went on another 16-3 run to start the second quarter to extend its advantage to almost 30 points, and Shaanxi came no closer than 14 points during the entire second half.
The South American zone's 2022 World Cup qualifiers had been scheduled to begin in late March but were postponed amid the escalating health crisis.
The 23-year-old Hertha Berlin player replaces Porto winger Luis Diaz who has been ordered to self-isolate after coming into contact with a person infected by COVID-19.
"I mean, we both gave everything," said the third-seeded Thiem. "The thing in tennis is that there is one loser, one winner. Despite (being) so disappointed, I'm still happy for him."
Shaanxi's Chen Yanyu was an assist shy of a triple-double with 21 points, 12 rebounds and nine assists. Li weighed in with 19 points.
Henan whittled away Shanxi's lead to three points through an 8-0 spurt. Then Wu made a layup and Yu Dong fired a three-pointer, snapping Shanxi's skid. Zhang Xianyuan led another Henan fightback, and after her jumper, Henan turned the game around at 56-54 with 1:57 left in the third quarter, but Shanxi managed to keep a slim advantage at 59-58 into the last period.
The five-hour and eight-minute triumph, which was Schwartzman's first victory over a top-five player at a Grand Slam, set up a rematch of the Rome quarterfinals against Spaniard Rafael Nadal, who withstood a challenge from 19-year-old Jannik Sinner and pulled away to win 7-6 (4), 6-4, 6-1 in the last match of the day, which finished at 1:30 am on Wednesday.
Everton playmaker James Rodriguez and Galatasaray striker Radamel Falcao will return to the international fold for Colombia's qualifiers against Venezuela and Chile.
On the Shanghai side, Zhou Yuyan had 11 points, and Han Xu bagged 10.