Ronald Koeman saw his reign as Barca coach get off to a flying start on Sunday when Ansu Fati led them to an easy 4-0 win at home to Villarreal, with all four goals coming before the break.
41-year-old Baum is expected to take over as soon as possible but at the latest before the following 14-day long league break due to the national team's games.
Paco Alcacer put Villarreal ahead after 12 minutes and although Edgar Mendez took advantage of a bad mistake from home keeper Sergio Asenjo 10 minutes before half-time, Gerard Moreno's VAR-assisted penalty allowed Villarreal to retake the lead on the stroke of half-time.
"New technology will deeply change the sports world," said Wang Yuxiong, professor of China's Central University of Finance and Economics.
Cadiz's win in Bilbao means it has won its two away matches this season, but lost its two home games and it has another difficult task when it entertains a Granada side that qualified for the group stage of the Europa League on Thursday night.
Fujian's form faded suddenly in the middle of the third set as Shanghai staged a 9-0 scoring run, including three points from serving. Shanghai then kept the huge lead until the set ended.
The other two German participants - RB Leipzig and Borussia Monchengladbach - have harder tasks in Groups F and B respectively.
Dubbed #RESTART, the series will witness a return of international table tennis events after several months of suspended activity due to the COVID-19 pandemic.
"A coach needs to convince players with his expertise and not by only being the boss," Baum said.
Facing Shenzhen, Suning's Alex Teixeira smacked the winning penalty in the 28th minute after Li Ang was tripped by Morteza Pouraliganji.
Rangnick said the coaching issue is not Schalke's only problem.