The 64-year-old, who began his managerial career as a teenager in 1975, had previous spells as Botafogo boss in 1986, 1995, 1998 and 2001.
Betis' horrible night was completed eight minutes from time when Alissa Mandi was sent off for two yellow cards to leave his side to play out the final minutes with 10 men.
The 48-year-old former Huddersfield manager is said to have lost the locker room. Reports speak of him as a weak communicator and that he had gradually lost his players' trust.
Also on Tuesday, men's seventh seed Matteo Berrettini of Italy cruised to a 6-3, 6-1, 6-3 victory over Canadian Vasek Pospisi.
Greek fifth seed Stefanos Tsitsipas is among the other players through to the third round of the men's draw after he recorded a comfortable 6-1, 6-4, 6-2 win over Uruguay's Pablo Cuevas.
Yan established an advantage from the very beginning, leading runner-up Yu Zongda, also from Hubei, by nearly two seconds in the first 50 meters. Huang Chaosheng from Hunan finished third.
The second set became a lop-sided show for Shanghai, which built an 11-4 lead at the start before Liaoning fought back to cut the score 12-8. However, Shanghai gradually controlled the pace of the match and denied Liaoning a chance to rally back.
Both Suning and Shenzhen showcased aggressiveness at the beginning of the first half, with Teixeira Santos's header parried by Morteza Pouraliganji in the third minute. Shenzhen's Gao Lin shot to strike back three minutes later but failed to score.
QINGDAO, China, Sept. 27 (Xinhua) -- World champion Xu Jiayu from Zhejiang clinched gold in the men's 200m backstroke in one minute and 55.26 seconds at the 2020 Chinese National Swimming Championships here on Sunday.
Henan took the lead at the start before Shandong gradually controlled the pace of the match for a 19-11 advantage. Henan was unable to pick up the offense and lost the first set 25-15.
QINGDAO, China, Sept. 29 (Xinhua) -- Liu Xiang and Yan Zibei, the Asian record holders of the women's 50m freestyle and men's 100m breaststroke, won titles in the two events respectively at the Chinese national swimming championships here on Tuesday.