Luneng will face Beijing Guoan in a two-legged knockout round next stage.
In the Changzhou division, 10-man Changchun Yatai came from behind to beat Sichuan Jiuniu 3-1.
Zhejiang bagged all three medals in the men's 100m butterfly, as Hong Jinquan clinched the gold in 53.03 seconds.
Other games played on Wednesday sees Atletico Madrid (and Luis Suarez fresh from two goals on his debut) travel to face recently promoted Huesca, while Villarreal entertain Alaves, who are without a win so far this season and Eibar are at home to Elche.
Boca had 68% of possession and seven shots on target to Libertad's one, in what was largely a lopsided contest at La Bombonera.
Olympic medalist Fu Yuanhui touched the finishing line first in the preliminary of the women's 100m backstroke, but was another to miss out on the final, ranking only 11th in the physical tests. Guangdong's Wang Xue'er took the crown in 59.55 seconds.
The first match of the championship group will take place on October 16, with this season's CSL champions to be crowned on November 12. Enditem
Having played his part in "Ping Pong Diplomacy" between China and the United States, Yao took up the role of Chinese team leader between 1985 and 1995, followed by his position as the ITTF Technical Committee Chair from 1995 to 2009.
The match between Sinner and Goffin was the first match under the new roof on Court Philippe-Chatrier, as the first day of this year's French Open turned out to be a stormy one.
Diaz is a stylish right-sided defender, who is comfortable on the ball and should complement the left-footed Aymeric Laporte in the Manchester City defense. He already has international experience after forming part of the 2018 Portugal World Cup squad.
"We were not in form at the start. Guards didn't handle the ball well on our first possession, which affected the team's rhythm and mentality," admitted Ji.