Four naturalized players Jiang Guangtai, Fei Nanduo, Ai Kesen and Li Ke were called up. Wu Xinghan from Shandong Luneng replaced Wuhan Zall midfielder Liu Yun who misses out due to injury.
Real Madrid faces a tricky visit to play Levante on Sunday evening and there is a feeling that coach Zinedine Zidane still doesn't know what his strongest eleven is. The Frenchman is handicapped by the loss of Eden Hazard, but in attack Zidane has steered away from playing Karim Benzema and Luka Jovic together to using Vinicius Jr and Rodrygo as wingers behind a lone forward.
Next up for the 33-year-old is Russia's world No. 16 Karen Khachanov. Djokovic owns a 3-1 lead in the head-to-head record against Khachanov but the latter won the pair's previous encounter in Paris - at the 2018 Paris Masters when the Russian claimed a straight-set win in the final to clinch the biggest title of his career until now.
Mainz failed to put up any resistance while Union relentlessly tripled their lead after Marvin Friedrich headed home Christopher Trimmel's free-kick in the 63rd minute for 3-0.
Their Canadian forward Christophe Lalancette completed his hat-trick in the final stretch to guide his team to a respected victory and the first place in the rankings, 4-5.
Early indications are that Carvajal could be out of action for up to two months, which means as well as the forthcoming internationals, he will also have to sit out this weekend's La Liga trip to play Levante, and league matches against Cadiz, Huesca, Valencia and Villarreal.
The 45-year-old Li, who spent his entire playing career with Luneng, was one of the key members in China's only World Cup experience in 2002. As a player, Li helped Luneng win one Chinese top-flight title, three CFA Cup titles and one CSL Cup title.
Berenguer arrives after Athletic Bilbao produced one of their worst displays in recent memory on Thursday evening, losing 1-0 at home to newly promoted Cadiz, who played for almost 30 minutes with just nine men after having two players sent off.
The defending champions, who had lost their first two games of the new season, have now bounced back with four consecutive wins to move up to second place.
Ospina is the fourth player to be cut for the fixtures because of injuries or coronavirus restrictions, joining Porto pair Matheus Uribe and Luis Diaz as well as Leon midfielder Yairo Moreno.
Also missing were injured Galatasaray goalkeeper Fernando Muslera and Atletico Madrid defender Jose Gimenez, who contracted the coronavirus.