Paris St Germain forward Lionel Messi and three other players have tested positive for COVID-19, the French Ligue 1 club said on Sunday.
Argentina international Messi joined PSG from boyhood club Barcelona in August and the 34-year-old has scored six goals in 16 games in all competitions for the Parisian side.
Defender Juan Bernat, back-up goalkeeper Sergio Rico and midfielder Nathan Bitumazala were the other players who returned positive tests.
PSG said in a statement that the four players were currently in isolation and subject to the appropriate health protocols.
France reported 219,126 new confirmed COVID-19 cases in a 24-hour period on Saturday, the fourth day in a row that the country has recorded more than 200,000 cases.
France has joined the United States, India, Brazil, Britain and Russia in having had more than 10 million cases.
PSG are top of the Ligue 1 standings on 46 points after 19 matches, 13 points above second-placed Nice.
They are due to travel to third-tier club Vannes on Monday for a French Cup round-of-32 match.
Formula One stewards handed Haas rookie driver Oliver Bearman a 10-place grid drop for his first home British Grand Prix for failing to comply with red warning flags in Saturday's final practice.
Seventh seed Mirra Andreeva outclassed American Hailey Baptiste 6-1 6-3 under the Court One roof to equal her best Wimbledon run by reaching the last 16 on Saturday.
Carrying a red floral wreath bearing his shirt number, Diogo Jota's Liverpool teammates joined relatives and residents in a small Portuguese town on Saturday for the funeral of the football star, who died with his brother in a car crash on Thursday.
An 83rd-minute Weverton own goal from a deflected Malo Gusto cross gave Chelsea a nervy 2-1 win over a spirited Palmeiras side in the Club World Cup quarter-finals on Friday.
Women's top seed Aryna Sabalenka fought off inspired home favourite Emma Raducanu in a cauldron-like Centre Court atmosphere to keep her Wimbledon quest on track but it was the end of the road for two other Grand Slam champions on Friday.