After the third period, which saw many lead changes and ties, Sichuan managed a one-point lead heading into the final 10 minutes.
China's Shi Yanghe and Zhao Jiangqiong won the men's and the women's 65km races respectively.
Boulaye Dia levelled in the 66th minute to clinch the second point for Reims this season.
The visitor from Spisska Nova Ves was leading by 13 points at half-time which ultimately proved decisive, but the home team managed to fight the deficit and almost brought the game to a thrilling end despite having only five available players in the second half due to injuries and fouls. Enditem
The arrival of the national quartet of Li, Yang Liwei, Huang Sijing and Li Yuan meant Inner Mongolia, playing in the WCBA for the second year, emerged as a rising powerhouse.
Colombia will host Venezuela in Barranquilla on October 9 before facing Chile in Santiago four days later.
"It wasn't easy at all. Our defence performance wasn't Bayern-like today but we showed great mentality and that is why we reaped all three points," Bayern head coach Hansi Flick said.
"This might be another painful setback, but after all, it delivered valuable hints of the topics we have to work on," Baum said.
Wolves also claimed three points thanks to Pedro Neto's 56th minute goal at home against a Fulham side still looking for its first point since returning to the top-flight.
In women's actions, top seed Simona Halep took sweet revenge on her opponent from last year's French Open defeat, trouncing American teenager Amanda Anisimova 6-0, 6-1 to progress.
Can Bozdogan (below) of Schalke 04 scores an own goal during a German Bundesliga match between RB Leipzig and FC Schalke 04 in Leipzig, Germany, Oct. 3, 2020. (Photo by Kevin Voigt/Xinhua)