3. Important to start well for Eibar and Celta
At the start of the second set, Azarenka broke again for a 2-0 lead, but from there Osaka fought back to break her opponent's serve twice and took a 4-3 lead.
Wang is 30th in the WTA singles rankings. She participated in six WTA tournaments this year and won seven matches. She defeated former world No. 1, Serena Williams at the Australian Open where she entered the quarterfinals this January.
In the other game in the Meizhou division on Sunday, Meizhou Hakka beat Liaoning Shenyang Urban 2-0.
Melichar said: "Before the match, I told my coach I was prepared for a 7-6 in the third set. Obviously I'm thrilled we won 7-6 in the third. You always wish that it's easier, but we fought our hearts out."
"We beat ourselves today. Our performance is hard to explain but it is a bitter defeat, that is for sure," Hertha Berlin head coach Bruno Labbadia said.
Osaka broke in the fourth game of the third set to take a comfortable 3-1 lead. In the next game, Azarenka blew a golden opportunity to get back into the match, wasting all three break points as Osaka recovered from 0-40 down to hold for a 4-1 lead.
Marcos Alves broke the deadlock for Hebei in the 15th minute through a header after receiving Yin Hongbo's long pass.
Williams had to come back from a set and a break down to storm to a 4-6, 6-3, 6-2 win against Bulgaria's Tsvetana Pironkova while Azarenka dropped just one game against 16th seed Elise Mertens of Belgium to seal a spot in the semifinals.
Red Bull's Alex Albon also passed Ricciardo and looked briefly as if he might be able to challenge the two Mercedes, but his initial pace proved a false dawn as Hamilton duly took his sixth win of the season ahead of Bottas.
Martinez Quarta has a European passport because of his Italian heritage, meaning he won't occupy one of the limited places available in Celta's squad for foreign players.