Paris 2024 sold a record 12 million tickets for the Olympics and Paralympics, beating the Games record previously set by London 2012, organisers said on Sunday.
Palfrey's comments triggered a fierce reaction from team officials and the Australian Olympic Committee.
Lin clinched gold in the women's boxing final match on Sunday, an emotional win that came as she and Algerian boxer Imane Khelif have been embroiled in a major row over their gender eligibility.
Tennis was introduced to China in the 1860s, but it failed to gain mass appeal and was largely an elite sport reserved for the wealthiest families.
The Australian Olympic Committee has decried a "misleading and bullying" online petition that described Gunn's performance as "unethical" and questioned how she was chosen for Paris.
Indian wrestler Vinesh Phogat on Thursday lost her appeal to the Court of Arbitration for Sport (CAS) after her disqualification from the women's 50kg final at the Paris Olympics for being overweight.
The athletes, fresh from a national record 53 Olympic medal trawl, were asked about absent colleague b-girl Rachael "Raygun" Gunn.
Australia's Olympic team, including gold medallists Jessica Fox, Kaylee McKeown and Ariarne Titmus, arrived back in Sydney on Wednesday to a rapturous welcome from friends, family and Prime Minister Anthony Albanese.
"What appears to you as two players on the podium, they were actually three! It was me, my competitor, & my yet-to-come to our world, little baby!" Hafez wrote on Instagram.
Murphy, a seven-times Olympic medallist, married Bridget Konttinen last year and the 29-year-old swimmer said they will be welcoming a child in January.
Biles makes her second appearance at the Paris Games in the women's team final, where she hopes to win a fifth Olympic gold medal for the United States.
The Italian, who was fourth in Tokyo, delivered Italy more joy following Nicolo Martinenghi's triumph in the 100m breaststroke on Sunday.
O'Callaghan won in a new Olympic record time of 1min 53.27secs, with compatriot Titmus 0.54 seconds behind and Hong Kong's Siobhan Haughey taking the bronze
World record-holder McIntosh produced a dominant 400m medley swim in Paris, clocking the fourth-fastest time ever.
Donald Trump on Monday called the Olympics opening ceremony in Paris a "disgrace," after its creators came under fire for what some said was a show gone too far
But the US sprint king tipped to be one of the faces of the Paris Games said Monday that his growing fame has become a problem in the Olympic Village.
The 54-year-old businesswoman had not missed a Summer Games since 1992 until a pandemic-enforced spectator ban meant she had to watch an Olympics taking place in her home city on TV.
It was 24-time Grand Slam champion Djokovic's 31st win in a rivalry which began on the same Roland Garros clay courts in 2006.