Due to individual federal states' regulations, Germany's Champions League representatives - Bayern Munich, RB Leipzig, Borussia Dortmund and Borussia Monchengladbach - have to deal with varying restrictions.
Boca had 68% of possession and seven shots on target to Libertad's one, in what was largely a lopsided contest at La Bombonera.
The transfer window closes next Monday. Sports director Hasan Salihamidzic is under pressure to satisfy coach Hansi Flick's demands. The 55-year-old reportedly asked for a midfielder, a right-back, and a winger replacing Ivan Perisic, Thiago Alcantara and Philippe Coutinho.
After the restart, both sides traded attacks as Dabbur pulled over the target from a promising position before Joshua Zirkzee rattled the woodwork from a tight angle on the hour mark.
Liu Shaofeng from Shandong and Tianjin's Yang Jintong finished joint first in the men's 50m freestyle in 22.72 seconds.
Starting from pole position, Zhou kept his lead in the opening stages of the race while others jockeyed for position behind him.
Ranking fourth in the preliminary heats of the women's 400m individual medley, Ye didn't advance to that final, as she failed to make the top eight in a round of physical tests, a new requirement for this year's championships.
Zhejiang's captain Zhu Yuezhou was the key person to lead her side to give Liaoning a 4-0 and a 6-0 shock in the middle of the third set. Liaoning then failed to cut the deficit.
Emerson scored an own goal in the 48th minute of the game to make it 2-2 after goals from Aissa Mandi and William Carvalho overturned Fede Valverde's 14th minute opener for Real Madrid.
Also on Tuesday, men's singles seventh seed Matteo Berrettini of Italy cruised to a 6-3, 6-1, 6-3 victory over Canadian Vasek Pospisil.
MADRID, Sept. 27 (Xinhua) -- FC Barcelona enjoyed a comfortable 4-0 win at home to Villarreal to give Ronald Koeman a winning start to his reign as coach in a game where 18-year-old Ansu Fati once again showed he is the natural successor to Leo Messi.