The Tricolor failed to qualify for the 2018 World Cup in Russia and were dumped out of last year's Copa America in Brazil before the knockout phase.
Liu was victorious in the 2019 Women's World Cup, defeating 2017 winner Zhu in last year's final.
Though it was clear that Djokovic had not intended to hit the line judge, organizers nevertheless said the Serbian was disqualified in accordance with the rules.
"Right now I'm really focused on the US Open, and nothing else I can think about right now," said Williams, who won six of her 23 Grand Slam singles titles at the US Open.
Elsewhere, fifth seed Alexander Zverev of Germany beat Frenchman Adrian Mannarino 6-7 (4), 6-4, 6-2, 6-2 to advance, while fourth seed Stefanos Tsitsipas of Greece was upset by Croatia's Borna Coric in a five-set thriller.
Both sides then created few chances to take one point apiece following the thrilling four-goal draw.
It is also the second F1 victory for the Faenza-based squad, following Sebastian Vettel's equally unlikely win at the 2008 Italian Grand Prix.
"It has been a difficult decision to make but unfortunately I will not be competing in Europe this year," Barty said on social media on Tuesday.
Simiyu's first tenure courted controversy when the national team commonly known as 'Shujaa' refused to wear a kit emblazoned with their sponsors Brand Kenya in the Paris leg of the World Series in 2018.
NAIROBI, Sept. 8 (Xinhua) -- Kenyan retired star Innocent Simiyu was on Tuesday reappointed as the head coach of Kenya's rugby sevens side.
BWF said the Badminton Association of Thailand cited special circumstances related to COVID-19 in addition to injuries to key players in making the decision.