All of his youngsters have already left their marks and speak about their enormous ambitions.
In Paris, France came from behind to repeat their triumph in the final of the 2018 World Cup, beating Croatia 4-2, despite the absence of striker Kylian Mbappe.
Slovakia lost three players to injury on Friday and three more had to return to their league clubs or face quarantine, forcing coach Pavel Hapal to ring the changes.
"There's no past Grand Slam champions left in the draw," said fifth seed Alexander Zverev from Germany, who made light work of Spain's Alejandro Davidovich 6-2, 6-2, 6-1 in another fourth round match.
Djokovic's unexpected exit ends both his 26-match winning streak this year and his attempt to win his 18th Grand Slam title, with the drama also sending Carreno Busta into the men's quarterfinals.
"I played pretty aggressively from the first ball, and that's pretty necessary against her because she's a great player who can hit a lot of great angles," Mertens said. "I tried to step into the court, and thankfully my first serve was working, so that was a big advantage."
"Serena is Serena," Sakkari said after advancing earlier on Saturday by beating 19-year-old American Amanda Anisimova 6-3, 6-1. "You have to come up with some great tennis. Otherwise there is no chance against her." Enditem
"I have a good impression about China. It's different from what you hear in Europe," Onuegbu said.
The Chinese Football Association (CFA) announced on August 26 that the 2020 China League One season will kick off on September 12.
The Hangzhou 2022 Asian Games will be held from September 10-25, 2022. Enditem
All players, technical staff, and other essential service providers would undergo the mandatory COVID-19 testing on arrival, GFA said.