Barbosa was forced off with an ankle injury at half-time, and his replacement Henrique took his chance by netting twice in the space of 20 minutes.
Due to individual federal states' regulations, Germany's Champions League representatives - Bayern Munich, RB Leipzig, Borussia Dortmund and Borussia Monchengladbach - have to deal with varying restrictions.
Vinicius Paiva put the hosts ahead by tapping home just after halftime before Lucas Evangelista equalized with a long-range effort.
The Italian rising star ripped 11 games in a row to defeat the Belgian for the second time in as many head-to-head meetings.
Schalke needs new confidence, he added, saying that Naldo might not only have spoken about the club's squad. Enditem
Several of those who tested positive for the virus have since recovered and Flamengo were able to begin Wednesday's match with seven of their usual starters.
Greek fifth seed Stefanos Tsitsipas is among the other players through to the third round of the men's draw after he recorded a comfortable 6-1, 6-4, 6-2 win over Uruguay's Pablo Cuevas.
MADRID, Sept. 27 (Xinhua) -- FC Barcelona enjoyed a comfortable 4-0 win at home to Villarreal to give Ronald Koeman a winning start to his reign as coach in a game where 18-year-old Ansu Fati once again showed he is the natural successor to Leo Messi.
Miguel Angel Russo's men are now four points clear at the top of the Group H standings, with one match remaining before the knockout rounds.
"Our being entrusted to host this global event is evidence of the confidence that the world has in our country and our levels of COVID-19 containment, as it will be the first global sporting event to be held on the African continent since the advent of the COVID-19 pandemic," he added.
"New technology will deeply change the sports world," said Wang Yuxiong, professor of China's Central University of Finance and Economics.