Elsewhere, Belgium's Elise Mertens upset second seed Sofia Kenin of the United States 6-3, 6-3 to also make the last eight.
NAIROBI, Sept. 8 (Xinhua) -- Kenyan retired star Innocent Simiyu was on Tuesday reappointed as the head coach of Kenya's rugby sevens side.
"Living and training here every day, shut out from the outside world, the athletes were in low spirits. There was also a potential crisis because it was hard for them to fully mobilize themselves, so their training efficiency and their self-discipline were affected," he said, adding that public attention might help top athletes keep their motivation up.
Osaka lost all three of her previous matches against Rogers, but this time she turned the tables and needed just one hour and 20 minutes to triumph.
Defending champion Egan Bernal also arrived with the leading group and was able to improve his overall ranking to second place.
"It's a fight for every second now and lots of things will happen to each of us on the road to Paris."
As the match seemed headed for a goalless draw in the second half, Shijiazhuang broke the deadlock in the 88th minute with a cross from Brazilian forward Matheus Leite Nascimento, helping midfielder Chen Pu to score an open goal.
Keeper Han Jiaqi made key saves to keep the three points for R&F, with Jianye unable to score in the second half.
Other clubs are expected to follow.
The 60-year-old's anniversary might well turn into the most significant challenge the 2014 World Cup-winning coach has ever faced.
"It was a very good match, very good competing, as well. In the third and fourth sets, I just felt like he also raised his level," Coric said. "He was playing some really, really good tennis, because I thought I was not actually playing bad. I just thought he was too good in the third and in the fourth sets."