Association president Fritz Keller demanded a series of victories to collect points helping to avoid relegation "as we can't afford to go down to a lower group."
Rennes had the chance to win all three points in stoppage time but Steven Nzonzi's header hit the post.
"I think I played a really good match. I was very aggressive. I knew from last year I had to change something, so I really wanted to be better than last year and definitely, I was today," said the world No. 2.
Reims took an early lead through captain Yunis Abdelhamid's header in the 11th minute. But goals from Raphinha and Damien Da Silva put Rennes in front at the break.
A few months ago, Bayern had signed Citizen star Leroy Sane for 50 million.
Le Fondre said he enjoyed his time with the club and in Australia.
Six minutes later, Bruno Labbadia's men thought they had opened the scoring but Jhon Cordoba's goal was ruled offside.
The injury means that Alba will be forced to pull out of the Spanish national team squad for the forthcoming friendly game in Portugal and the UEFA Nations League ties against Switzerland and Ukraine.
"We stop, we come back, we stop on the changeovers. I think this is a little bit dangerous for the body with these very heavy conditions."
In a fiercely contested second quarter, which was halted by fouls often, Dongguan managed to go up by 19 points clear at halftime through steady performance on the free throw line, and went uncontested from Wuhan back from the locker room.
Argentina will host Ecuador at La Bombonera in Buenos Aires on October 8 before a clash with Bolivia in La Paz five days later.