The teams are due to meet at Estadio Azteca in Mexico City on September 30, however health concerns and possible quarantine measures have cast doubt over the fixture.
"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
Elsewhere, Canadian rising star Denis Shapovalov stunned seventh seed David Goffin of Belgium 6-7 (0), 6-3, 6-4, 6-3 to make last eight, while Croatia's Borna Coric also advanced.
“A pivotal moment was the 16th hole where I made a 25-footer for birdie. I was really happy that I lagged behind at that time,” said Yin, who also won the CLPGA Tour Qualifying Tournament in January as an amateur.
The win puts Kenin into the third round at the US Open for the fourth year in a row. The American has come up short against top players like Maria Sharapova (2017), Karolina Pliskova (2018) and Madison Keys (2019) at this stage in the past.
"For me it is a dream come true to play in a big club like Chelsea and I can't wait to meet all the players and the trainers. Yeah," said the 21-year-old, who arrives from Bundesliga club Bayer Leverkusen.
"I have been [wanting to leave] all year. I thought the team needed younger players and I thought my epoch at Barcelona had ended. It was a complicated year. I suffered a lot in training, in games and in the dressing room. Everything was very difficult and there came a moment when I decided to look for new objectives."
Yates was dropped on the final climb of the 153km from Pau to Laruns, which was the second day that the race took place in the Pyrenees.
GUANGZHOU, China, Sept. 9 (Xinhua) -- Four top football academies in China, Guangzhou Evergrande, Guangzhou R&F, Shandong Luneng and Zhejiang Greentown, jointly issued an open letter on Tuesday, condemning some "immoral" agents.
STOCKHOLM, Sept. 5 (Xinhua) -- Paris Saint-Germain striker Kylian Mbappe scored as France earned a 1-0 win over Sweden in the UEFA Nations League on Saturday.
In other matches on Friday, Tijuana secured a 2-1 home win over Monterrey and Santos Laguna drew 1-1 at Juarez. Enditem