Brazilian news outlet O Globo said former Atletico Madrid duo Diego Ribas and Filipe Luis were among the players to test positive. Others were Chile international right-back Mauricio Isla, winger Bruno Henrique, forward Michael Delgado and defender Matheuzinho, the report added.
Hertha's head coach Bruno Labbadia made changes and fielded Deyovaisio Zeefuik, Arne Maie and Jhon Cordoba after the restart.
Matthew Wolff of the United States came second at even par and South Africa's Louis Oosthuizen was third on 282.
Villarreal came back from a goal down to take their first win of the season with a 2-1 at home to Eibar.
Speaking to Sky Sports after his return to Tottenham on loan, the Welsh international explained he was returning as a more mature person to the club he left in 2013 to join the Spanish giants.
"Obviously going into a different culture, a different country, I've had to grow up as a person, never mind a footballer," said Bale, whose time at Real Madrid turned sour over the past 18 months, with the press and fans turning against him after a continuing series of injuries.
Peng Xinli broke the deadlock in the 37th minute as the midfielder burst into the box and prodded into the net from close range.
Bale's relationship with Real Madrid coach Zinedine Zidane also deteriorated badly in recent months and he hardly played in the last 11 games of last season as Real claimed the La Liga title.
"They managed to escape our pressing for over an hour," striker Thomas Mueller said. His statements indirectly back Flick's claim to get a right-back, a number 10 as a successor of the ball-machine Thiago and an additional winger.
Both sides started highly motivated as Leverkusen took over, whereas Wolfsburg focused on turnovers and fast breaks. However, both teams lacked in accuracy.
Last weekend's home defeat to Crystal Palace was a shock to Manchester United fans, immediately prompting fears that last season's progress could be lost after a frustrating summer in the transfer market.