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.
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.
Zidane's men controlled most of the ball in the first half, but it was a sterile domination with their only clear chance coming thanks to Karim Benzema after an error by home keeper Alex Remiro. At the other end, Thibaut Courtois produced a fine save to deny Alexander Isak.
An official with the committee said they will shift the focus to the preparation of next year's event, and try to stage an event with higher specifications, more international vision, greater influence and higher quality.
The WTT expected to mark the dawn of an exciting new era for the sport in 2021. But due to the COVID-19 pandemic, the groundbreaking table tennis organization is arranging its inaugural event calendar in the best possible way to overcome the challenges.
Andreescu, the 2019 US Open champion, missed the opening months of the year because of a knee injury before the pandemic forced the suspension of the sport.
In Tuesday's match, Guoan were up by three goals before the interval, with goals from Yu Yang, Jonathan Viera and Fernando Lucas Martins.
"We played too passive and were not aggressive enough in the tackles," Mainz sporting director Rouven Schroder said. Enditem
Jean Mota scored the winner eight minutes from time as Santos clinched their third win from four matches.
Against Sevilla, only three experienced players like Javi Martinez, Corentin Tolisso, and Jerome Boateng were left on the bench.
Shenhua doubled the lead eight minutes after the break when Peng's header found Bi Jinhao, who resisted a shoulder-to-shoulder challenge in the box to drill home.