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.
The Spaniard will next take on 18th seed Grigor Dimitrov of Bulgaria, who beat Slovakia's world number 102 Andrej Martin 6-4, 7-6, 6-1.
Zhang was 0.45 second faster than the former Asian record holder, Olympic champion Liu Zige, who has kept it for 11 years. There is only a 0.14-second difference between Zhang's new record and the world record held by Swedish Sarah Sjostrom.
Finishing first in the preliminary heat of the men's 100m freestyle, Yu Hexin from Guangdong didn't show up in the final as he failed to make the top eight in the physical tests, according to a new rule of the championships.
One player who is likely to miss out however, is striker Luka Jovic. The Serb was given a chance to show what he can do at the weekend, but produced another disappointing display (although he did provoke a red card for Betis defender Emerson). Everything points to Jovic being loaned out before the end of the season with Borja Mayoral remaining as backup to Karim Benzema.
Midfielder Unai Lopez scored twice as Athletic Club Bilbao won 2-1 away to Eibar.
Tang Muhan from Guangdong topped the women's 400m freestyle in 4:07.04, and Ma Yonghui and Zhang Ke, both from Hebei, took second and third places respectively.
Also, Iran's Super Cup will be held between IPL champions Persepolis and Hazfi Cup winners Tractor soccer clubs on October 18. Enditem
The game had already seen more than its fair share of drama after Solly March had headed Brighton level in the 95th minute, when it had looked as if a Lewis Dunk own goal and a cool finish from Marcus Rashford would give Ole Gunnar Solskjaer's men three points after Neal Maupay had put the home side in front from the penalty spot.
Vasco are now fifth in the standings with 18 points while Brangatino are 17th, seven points further back.
"It means a lot for me. I think I improved a lot in the past two years. I believe in myself that I can make something better than I was before," Giustino said.