Paris St Germain have closed their training facility as a precautionary measure after detecting several cases of COVID-19, the French Ligue 1 club said on Wednesday.
The training centre will be closed until Monday and another screening session will be carried out on Friday.
The men's team are unaffected and face Lille in the French Cup last 16 later on Wednesday, but the women's team were unable to play their game against Sparta Prague in the Champions League.
PSG lead 5-0 from the first leg of the last-16 tie but would advance on aggregate if the match is forfeited, which would be considered a 3-0 loss.
"Given the mandatory quarantine of the Paris Saint-Germain team... the UEFA Champions League match between Sparta Prague and Paris Saint-Germain, initially scheduled for Wednesday March 17, 2021 in Chomutov, cannot be held," UEFA said.
"The case is submitted to the UEFA Ethics and Disciplinary Control Body, which will take a decision shortly."
American great Serena Williams will face Australian 20-year-old Maya Joint in the first round of her eagerly awaited return to Wimbledon, a potentially tricky tie for the seven-time champion playing at the tournament for the first time since 2022.
Australia booked their spot in the knockout rounds of the World Cup on Thursday after a cagey draw against Paraguay, who are set to qualify as a third-placed finisher, while Turkey beat USA 3-2, scoring the winner with virtually the last kick of the match.
The Netherlands scored two goals in the first seven minutes of the first half en route to a 3-1 victory over Tunisia on Thursday night in Kansas City in Group F, while Japan and Sweden drew 1-1 in Texas.
Ecuador coach Sebastian Beccacece said all Ecuadoreans have a lot to celebrate on Thursday after the country's biggest World Cup result ever, coming from behind to beat Germany 2-1 and advance to the knockout stage.
New Zealand took control of the third Test at Trent Bridge with Tom Latham and Devon Conway setting a record partnership for the Kiwis against England on Thursday.