A new pitch will be installed following Wednesday's Copa do Brasil match between Fluminense and Atletico Goianiense, according to venue operator Maracana SA.
The ExCo also heard progress on its governance reforms approved by the Board in November 2019, which will see the Board appoint two additional independent ExCo members and discuss the ongoing development of a WADA Code of Ethics.
Granada were clearly the better outfit and led by three goals on the half hour when Herrera produced a sharp finish following good control and a cross from Kenedy, who was able to push forward comfortably, and netted his second of the game in the first minute of the second half. The Venezuelan latched onto a long ball from the back and clipped his shot over the advancing keeper.
15th seed Grigor Dimitrov of Bulgaria eased past Italian wildcard Gianluca Mager 7-5, 6-1, while Marin Cilic rallied to beat Kazakhstan's Alexander Bublik 6-7 (4), 6-2, 6-4 to set up a second round meeting with sixth seed David Goffin.
Flamengo will meet Independiente del Valle on Thursday and Barcelona de Guayaquil five days later.
Top seed Djokovic labored for two hours to win 6-3, 4-6, 6-3 against German qualifier Dominik Koepfer.
The two-day competition will see the country's most prestigious female race walkers, including world record holder Liu Hong and world champion Yang Jiayu, vying for the women's 20km title on Sunday. Enditem
Liverpool regained the lead in the 20th minute as Virgil Van Dijk took advantage of some slack marking to smash home a header from Andy Robertson's corner.
The preliminary squad, which is made up of Mexico-based players only, also includes Talavera's Pumas teammates Johan Vasquez. Enditem
Five minutes later, the crossbar denied Dortmund a greater lead before the break, as Jadon Sancho's header bounced off the woodwork.
The 35-year-old agreed to a contract that runs until the end of the current Serie A season in February, Sport said on Thursday.