The six-time US Open champion will next face compatriot and 2017 champion Sloane Stephens.
The group testing sessions will include some advance-notice testing, where the main focus will be on building the profiles of athletes for the Athlete Biological Passport (ABP) program.
PP Sports released a statement on Thursday night, claiming the termination was just a "strategic adjustment".
Zall's Brazilian forward Leonardo Baptistao sparked the contest into suspense with a powerful header to convert Li Hang's 67th-minute corner.
Belarus's Victoria Azarenka advanced into the quarterfinals after rallying past Karolina Muchova of the Czech Republic 5-7, 6-1, 6-4.
Simiyu takes over from New Zealand national Paul Feeney who left the post in April citing concerns over the COVID-19 pandemic.
Stephens went up a double break to carve out a 5-2 lead and served out the opening set in just 38 minutes. But Williams began to raise her game and served much better in the second set, lifting her first-serve percentage from 50 to 76 percent. By breaking twice, Williams won the second set to level the match.
MONTREAL, Sept. 4 (Xinhua) -- The United States could face sanctions if they cut off funding from the World Anti-Doping Agency (WADA).
Fans of Guangzhou Evergrande cheer for the team during the 9th round match between Guangzhou Evergrande and Guangzhou R&F at the postponed 2020 season Chinese Football Association Super League (CSL) Dalian Division in Dalian, northeast China's Liaoning Province, Sept. 4, 2020. (Xinhua/Pan Yulong)
Barbosa rifled in an 87th-minute winner after Fortaleza midfielder Juninho had canceled out Everton Ribeiro's opener at the Maracana stadium. Enditem
"Piatek traveled to Bosnia against our agreement," said Preetz in an interview for Kicker magazine on Sunday evening.