After Tianjin led 2-1 from the third set, both sides fought to tie at 26-26 which Jiangsu saved one match point to level at 2-2, before taking the decisive fifth set.
In the day's other match, South Korean striker Son Heung Min scored four goals as Tottenham produced a second half blitz to win 5-2 away to Southampton.
Also on Thursday, Shanghai surprised Tianjin with a straight-set win (27-25, 25-23, 25-22). Enditem
When winning his fourth trophy, the game against the Spaniards delivered convincing arguments to back his demand for new signings to make his squad strong enough to defend as many of the trophies as possible.
South American football governing body CONMEBOL is understood to have ruled out the possibility of postponing the fixture. The entity's coronavirus protocols required clubs to register 50 players in their Copa Libertadores squads to help teams with several coronavirus cases.
Without Kun Aguero, Aymeric Laporte and Ilkay Gundogan, who has been diagnosed with the coronavirus, Pep Guardiola handed a debut to recent arrival Nathan Ake, and young phenom Phil Foden was also in the starting 11.
"I am sure we will make it, we will make these Olympic Games a success." Enditem
Crystal Palace took the lead in the seventh minute through Andros Townsend and doubled their advantage through Zaha's retaken spot kick after David de Gea was judged to have moved too soon when denying Andrew Ayew after a handball.
Reynolds has been called up to various youth national team camps of the United States and was the youngest player on the US Under-17 team during the CONCACAF Championship in 2017. He also represented the United States in the 2017 FIFA U-17 World Cup in India.
Zidane was without Marco Asensio, Isco and Eden Hazard against Real Sociedad, and if fit, that trio would give him more attacking options. Both Hazard and Asensio began training with the group towards the end of the week, and though neither is likely to be fit enough to start, they could take up a place on the bench.
Hertha was able to score a consolation goal in the 76th minute with the assistance of Martin Hinteregger, who cleared a square pass from Torunarigha into the wrong goal.