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.
The athletes, fresh from a national record 53 Olympic medal trawl, were asked about absent colleague b-girl Rachael "Raygun" Gunn.
Khelif was the centre of a gender controversy at the Olympics on her way to the women's 66kg title.
Jamaica were in third spot after the opening leg, but Andrenette Knight dropped the baton after bumping Ireland's Rhasidat Adeleke on the second leg.
The USA's dream team of NBA superstars held off France 98-87 to take their tally of men's Olympic basketball golds to 17.
China claimed their fifth gold from five competitions at the Games.
"Why didn't anyone dare to question Phelps when he won?" Chinese swimmer Yufei responded to questions about Pan during Thursday's press conference.
The victory is Douglass's third Olympic medal following bronze in the 200m medley in Tokyo and silver in the 4x100m freestyle relay in Paris.
Olympic champions will also be crowned in badminton, equestrian, rowing, windsurfing and shooting.
The bitterness between the two nations increased earlier this month after a video posted by Argentina's Enzo Fernandez following their Copa America title that featured a song sung by some members of the squad about France's players of African descent.
She said she would likely hang up her competitive rash shirt and look to start a family after the Olympics.
Their time at La Defense Arena was second only to their own world best, set at the 2023 world championships.
Nadal ends the Games without the third Olympic gold medal he craved on what could well be his last appearance on his beloved Parisian clay.
The Frenchman will also go for gold later on Wednesday in the 200m breaststroke.
The Japanese picked up his second gold in Paris after helping his country become victorious in the team final two days ago.
US broadcasting of the 2024 Paris Olympics is set to be a showcase of generative AI, stemming from AI-enhanced Google Maps images to AI-generated broadcasting voice. However, the European audiences aren't going to have a similar experience. Let's take a look at how this year's Olympics broadcast in the US and Europe is embracing, or not embracing, the use of generative AI.