In the women's singles, fourth seed Osaka survived a ding-dong battle against Kostyuk to emerge victorious 6-3, 6-7 (4), 6-2 after two hours and 33 minutes.
"It was a very good performance from my side. I managed to read his serve well," Djokovic said. "I found my way, especially after the first set. The second and third sets were a really great feeling on the court."
Ancelotti, 61, signed a four-and-a-half-year deal with Everton last December after having been sacked by Italian Serie A side Napoli earlier that month. He led Everton to finish 12th in the Premier League last season. Enditem
Armin Hodzic (R) of Bosnia and Herzegovina (BiH) vies with Tomasz Kedziora (1st L) of Poland during the UEFA Nations League football match between BiH and Poland in Zenica, Bosnia and Herzegovina, on Sept. 7, 2020. (Photo by Nedim Grabovica/Xinhua)
Germany started brightly on home soil and created the first chance of the game as Toni Kroos' cross into the box allowed Thilo Kehrer to test Spain goalkeeper David de Gea in the 11th minute.
World championship leader Lewis Hamilton could only finish seventh after serving a time penalty for coming into the pitlane when it was closed, dropping him to the back of the field.
"It's a fight for every second now and lots of things will happen to each of us on the road to Paris."
Kenya which currently has laws to criminalize doping in the country, has been embroiled in doping scandals involving its top runners.
The Kenyan was the third pacemaker on Sept. 4 at Brussels Diamond League in the One Hour race which saw Dutchwoman Sudan Hassan, the reigning world 1,500 and 10,000m champion, produced a thrilling kick over the final minute to see off Kenyan world marathon record holder Brigid Kosgei and notch up an astonishing 18.930km over the 60 minutes.
In other games in the top-tier League A, Portugal beat Croatia 4-1 thanks to goals by Joao Cancelo, Diogo Jota, Joao Felix and Andre Silva. Portugal were missing Cristiano Ronaldo, who was out because of a toe infection.
Then in the third set, Williams was rarely troubled by her rival en route to victory.