Facing Shenzhen, Suning's Alex Teixeira smacked the winning penalty in the 28th minute after Li Ang was tripped by Morteza Pouraliganji.
Ramos chipped the ball into the middle of the Betis goal to give his side their first win of the season and end Betis' winning start to the campaign.
Fernando doubled his tally with an unstoppable volley in the 74th minute. In stoppage time, Ba Dun finished his first goal in CSL this year and made it a 4-0 victory against Shijiazhuang.
The former world No. 1 is to face a tougher challenge in the second round against 2017 champion Jelena Ostapenko of Latvia, who knocked out American Madison Brengle 6-2, 6-1.
Mendilibar lost several key players, such as Fabio Orellana, Charles and Escalante over the summer, while Ivan Ramis retired, and so far adequate replacements haven't arrived leaving the squad weaker than the one which struggled last season.
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.
For the fifth placed Shenzhen, any prospect of promoting the top four appeared to be extinguished when Pouraliganji's powerful shot hit the crossbar on 75 minutes.
World Athletics also announced that the Cross Country Championships will move from odd years to even years in 2024 to align with the Olympic Games. Enditem
The Brazilian, who had entered the game as a substitute, took advantage of a loose ball to beat Valladolid keeper Roberto Jimenez with a diagonal shot.
"It's always the same old story," the football magazine kicker commented.
Chongqing broke the deadlock in the 37th minute. After receiving a free kick from midfielder Huang Xiyang, Marcelo Cirino flicked a header to Yuan, who converted another header to make it 1-0. The linesman rose his flag immediately for offside, but the referee judged the goal was valid with the assist of the VAR.