Newly-crowned US Open champion Dominic Thiem extended his winning streak to nine matches as the 2018 and 2019 Roland Garros finalist saw off American qualifier Jack Sock 6-1, 6-3, 7-6 (6) in two hours and 22 minutes.
Several Flamengo officials and members of the coaching staff, including manager Domenec Torrent, have also been diagnosed with the virus. Torrent was replaced on the touchline at Allianz Parque by his assistant, Jordi Guerrero.
Real Sociedad ruined Elche's return to the top flight as they won 3-0 in Elche's Martin Valero stadium with second half goals from Portu, Adnan Januzaj and Roberto Lopez.
Ranking fourth in the preliminary heats of the women's 400m individual medley, Ye didn't advance to that final, as she failed to make the top eight in a round of physical tests, a new requirement for this year's championships.
Atalanta claimed a one-sided win against Lazio, as Papu Gomez took the stage with a brace, helping the Dea enjoy a 4-1 victory.
The 22-year-old Croatian center (2.16m) has played NBA basketball for four seasons, the first three of them for the Phoenix Suns that selected him as a fourth overall pick of the 2016 draft.
"It means a lot for me. I think I improved a lot in the past two years. I believe in myself that I can make something better than I was before," Giustino said.
The next stage will begin with a two-legged knockout round from October 16. Enditem
"I have been dreaming about winning the Champions League since I was a child. Now I know that feeling. The whole season was amazing for us," added Lewandowski, who also won the award for the best forward of the year.
Thepchaiya Un-Nooh from Thailand won the other group on Saturday.
Guangdong's Yu Hexin, who broke the national record in the men's 50m freestyle with a time of 21.79 seconds during the heats, was another one who failed to advance to the final due to the new rules on physical tests.