"At the time, I did kind of think they were booing at me 'cause I couldn't tell what was going on because it was just so loud in there, so it was a little bit stressful", she added.
Despite coach Patrick Mouratoglou admitting he was coaching from the box, Williams doubled down on her claim, insisting she knew nothing about it.
Williams spoke exclusively to The Project's Lisa Wilkinson, in an interview to air next Sunday.
Serena Williams talked about her fashion business and her family, but not tennis fouls during a Friday appearance before a business trade group in Las Vegas. "We've never had signals".
During an appearance on Ellen, Osaka also explained how she remained composed while Williams flipped out on umpire Carlos Ramos, and how she feels as the reigning champ.
But the argument is not about whether what she said was or wasn't right: it's about the repercussions she incurred, which included a $17,000 fine in addition to the two-point deduction.
The Women's Tennis Association (WTA) and Billie Jean King were among those to back Williams, with the latter calling out a "double standard" in the game.
A cartoon caricature of Williams that appeared in the Herald Sun inflamed the controversy further, drawing comparisons to USA racial stereotypes of the past.
'It looked like Armageddon.' Homes burn in MA
The outlet also reported a handful of basement fires within Andover, hearing on the police scanner that evacuations were underway. Some 400 people spent the night in shelters, and school was cancelled Friday as families waited to return to their homes.
"It's been polarized and in some ways politicized", US captain Jim Courier told The Associated Press on Thursday.
Although he does not experience much discrimination these days, he does still get stared at, he said, adding that he hoped the prejudice would eventually fade.
According to a press release, Nissan plans to feature the US Open champion in ads and "support her activities as a tennis player", which included transportation in the company's cars during her tours.
But Osaka said her tastes veered towards Nissan's sports cars. "Davis Cup is highly unpredictable and playing for your country can affect people in different ways, shapes and forms". "That's what it's all about".
Osaka had just won her first Grand Slam title after defeating the 23-time major victor Serena Williams at the U.S. Open on Saturday. "I can't remember a great player that gets less dispensation than Serena", he says.
The issue has polarised the sporting world, with some believing that Williams was hard done by and had a point while others thought she was a poor sport who had tarnished her legacy. When are you going to give me my apology?
"For me it's not something that I have to think about".