The London club said their medical team was informed of the test results as the team was at London Stadium preparing for their Tuesday evening's EFL Cup third-round match against Hull City.
The testing of players is mandatory in the Premier Leauge but not in the English Football League which includes Championship, League One and League Two.
Wolfsburg made a powerful start on home soil and caused a lot of trouble on the left wing. It took the hosts only 16 minutes to break the deadlock when Renato Steffen flicked on Admir Mehmedi's pinpoint corner, allowing Guilavogui to nod home the opener from close range.
Arrascaeta doubled the visitors lead by holding his ground while under pressure from Damian Diaz and then nonchalantly lofting a shot over Burrai that went in off the underside of the crossbar.
Uruguay will meet Chile in Montevideo and Argentina face Ecuador in Buenos Aires in other opening day fixtures.
Stoppila Sunzu pulled one back for Shijiazhuang shortly after the interval. But Mierzejewski restored Chongqing's two-goal advantage in the 72nd minute and completed his hat-trick with a penalty to seal a 4-1 win.
In addition, Mohamed Buya Turay and Brazilian Marcos' goals helped Hebei China Fortune locked up the final seed in Suzhou Division on a 2-0 win over Wuhan Zall. Enditem
MADRID, Sept 24 (Xinhua) -- Chinese owned La Liga outfit Granada look to keep their dreams of qualifying for the group stage of the Europa League alive on Thursday when they entertain Lokomotiv Tiflis in the third qualifying round of the competition.
Sun Ke (L) of Shenzhen FC vies with Marek Hamsik of Dalian Pro during the 13th round match between Shenzhen FC and Dalian Pro at the postponed 2020 season Chinese Football Association Super League (CSL) Dalian Division in Dalian, northeast China's Liaoning Province, Sept. 24, 2020. (Xinhua/Pan Yulong)
The second half started similarly to the first as Dortmund controlled possession whereas the Bavarians waited for chances. And their chance came earlier than expected, as Augsburg clinically doubled their advantage with only their second shot on target after Florian Niederlechner's through ball allowed Caligiuri to make it 2-0 in the 54th minute.
After Beijing jumped to a 13-4 lead in the third set, Yunan called a time-out, closing it to one point at 20-21, and called another time-out but failed to level it even.