Clinching a victory in his 100th match at Roland Garros, the record 12-time champion secured a place in the last four for 13th time in the clay major, ending an impressive run from Sinner who had upset 11th seed David Goffin and 6th seed Alexander Zverev in his previous matches.
"The tiebreak was very tense. The tiebreak was where all the money was," said Tsitsipas on court. "I am glad that I played good tennis and I didn't panic. I stayed concentrated, stayed low-key and tried to take it point by point."
"After a tight first half, we did well on defense and rebounds in the second half," Xinjiang coach Gao Fengjuan explained.
"Speed is her advantage. We hope she can improve her vision on the court and shooting ability," added the former head coach of China's women's junior national team. Enditem
The "Eisernen" made a perfect start on home soil as Christopher Lenz tested Mainz goalkeeper Robin Zentner in the early stages, before Max Kruse nodded home his debut goal after Sheraldo Becker's pinpoint cross to the far post in the 13th minute.
Outscoring its opponent 28-14 after the first quarter, Jiangsu was never really challenged by Shaanxi over the ensuing three quarters.
"We grew up playing together. (Rublev) has improved a lot ... It is very important for me to take this opportunity and fight harder this time, maybe do something better, " said Tsitsipas, who has lost all the two previous encounters on the Tour with Rublev as the recent one was just eight days ago at Hamburg Open final.
"We are in a very strange situation, after a lot of months without much tennis, especially for me, that I didn't play in America, I don't know if it's a positive thing or a negative thing," Nadal said when asked how important it was to keep the early-round matches short and sweet.
The 51-year-old coach replaced interim coach Majid Namjoo Motlagh on the Tehran-based team.
In the Changzhou division, Tan Long scored a hat trick to propel Changchun Yatai to a 4-1 victory against Xinjiang Tianshan Leopard.
Boulaye Dia levelled in the 66th minute to clinch the second point for Reims this season.