It isn't, and as a result, a player was penalized for the actions of her coach.
"Because I'm a woman you're going to do this to me", she said.
Williams, in the final, was fined $10,000 for "verbal abuse" of chair umpire Carlos Ramos, another $4,000 for being warned for coaching in the match, and $3,000 for breaking her tennis racket.
Ramos did not openly state that Williams was cheating, but the implication of the umpire's decision left little room for doubt that he believed she was trying to gain an unfair advantage.
Williams then verbally abused umpire Eva Asderak and was fined $2,000 (£1,265).
"You stole a point from me and you are a thief", Williams told Ramos prompting the game penalty ruling.
"I think all these claims of sexism are just not justified and if I look at it in retrospect I'd say Serena actually owes Naomi Osaka an apology because she was the better player on the day, she would have won the match fair and square without all of the hoopla. He's never taken a game from a man because they said 'thief".
Many pundits called out what they labelled as "sexism" towards Williams from the umpire.
"When a woman is emotional, she's "hysterical" and she's penalized for it", King wrote, "when a man does the same, he's "outspoken" & there are no repercussions". When a man does the same, he's "outspoken" & and there are no repercussions. Thank you, @serenawilliams, for calling out this double standard.
Freeland, Lighthizer meet as NAFTA talks resume with October 1 deadline looming
Nor had it made much of a ripple in public discussions on NAFTA, except during some testimony at a few USA hearings, experts say. Mexican officials stressed in a joint statement that they are "continuing to promote an agreement to which Canada is a party".
In fact, Harlow and Brennan strongly implied the only real issue was the fact that Williams argued with a judge.
"We know that there's quite a history to it. Think of John McEnroe, think of Ilie Nastase, Jimmy Connors, Andre Agassi". Tough thing for a chair umpire to deal with, as well. Commercials have been made. History has said, no.
Female tennis players have also been voicing their support for Williams, including Victoria Azarenka. "She said that wasn't the case at all". When she returned, she realized that she was wearing it the wrong way and fixed her top.
Over the weekend, Knight published his reaction to Saturday's US Open women's final - and in doing so, summoned the vile imagery that was largely popularised during the Jim Crow era.
However, male players have changed shirts many times on court without a problem. "Just maybe changed - not maybe, but he did change the course of the match".
In Williams' first major tennis match after giving birth, her outfit stole the show.
After Williams" "catsuit' was banned at the French Open in August, the athlete is now dealing with the policing of her words in addition to her clothing.
One Tweet said: "It was straight up racism and sexism".
"Always something happens to me here", she huffed at tournament referee Brian Earley, summoned to the court after she failed to get satisfaction from Ramos. The $500 dress was designed by Louis Vuitton menswear artistic director Virgil Abloh in partnership with Nike. He Sambo'd Serena Williams.