Kenin, who won her first Grand Slam title at this year's Australian Open, did not face a break point in her match against 17-year-old Fernandez before nailing her convincing win.
Poland now travel to play Bosnia and Herzegovina on Monday, while the Netherlands face Italy. Enditem
In a lifeless first half between two newly promoted sides, Ever Bright striker Luiz Muriqui pulled muscle and was substituted in the 24th minute.
The 2020 Women's World Cup is scheduled from November 8 to November 10.
In a statement, Fluminense did not disclose details of the move nor the name of the 20-year-old's new club, though widespread media reports in Brazil and Portugal said he had signed with Porto.
There were also many hand sanitizing points and people were asked to keep two meters distance from one another.
"You can feel it in your body when you have a good throw, mostly you feel the whole energy behind it, from the right toe to the chest to the hands. In the javelin you need your whole body. But it's really hard to explain - you feel it for less than one second. But then you realize that it was a huge throw," he explained.
Elsewhere, Belgium's Elise Mertens upset second seed Sofia Kenin of the United States 6-3, 6-3 to also make the last eight.
Zhejiang then defended some honor with Huang Yuxiang overcoming Tan Zhendong 14-15, 11-6, 11-7, 11-6 in the men's singles, and Ni Bowen/Lv Rouhao beat Zhang Xinran/Chen Zirui 11-5, 11-2, 11-5 in the women's doubles.
Over 260 contestants from six Chinese teams participated in six competitions, including the tank biathlon. Enditem
"It's more important to enjoy the process," Gu added. "You can take pictures and enjoy the view so as to relax yourself when you go to different places to participate in competitions. It's also important to display sportsmanship. During the cycling portion of one triathlon, a competitor in front of me fell, and I immediately stopped to help him."