Australian cartoonist under fire for Serena sketch

An Australian cartoonist has come under withering criticism for portraying tennis superstar Serena Williams using -- what Harry Potter author JK Rowling described as -- "racist and sexist tropes".

Mark Knight's caricature, published in Melbourne's Herald Sun newspaper on Monday, shows a butch and fat-lipped Williams jumping up and down on her broken racquet at the US Open.

Williams' heated exchanges with an umpire at the tournament final this week have stirred the tennis world.

She was found guilty of code violations and fined USD 17,000 -- raising allegations that there are double standards for male and female players.

Williams was thwarted in her bid for a record-tying 24th Slam singles crown in losing to Japan's Naomi Osaka.

In the cartoon the umpire is seen saying to Osaka "can't you just let her win?".

Knight, who has a reputation for controversial cartoons, was pilloried from far and wide, including by a member of the US Congress and a large portion of the 22,000 people who commented on his Twitter post showing the drawing.

My toon in today’s @theheraldsun on #SerenaWilliams @usopen pic.twitter.com/didwtQg1R5

— Mark Knight (@Knightcartoons) September 10, 2018

I would say delete this, but this display of racism is so blatant in the year 2018 that it belongs in a museum to raise awareness to future generations about what African-Americans are going through today.

— Eugene Gu, MD (@eugenegu) September 10, 2018

Where was this cartoon for all the men who have broken their rackets over the years?

— Julie DiCaro (@JulieDiCaro) September 10, 2018

Well Julie here’s a cartoon I drew a few days before when Australian male tennis player Kyrgios at the US Open was behaving badly. Don’t bring gender into it when it’s all about behaviour. I’ll accept your apology in writing😁 pic.twitter.com/NLV0AjPGsY

— Mark Knight (@Knightcartoons) September 10, 2018

Well done on reducing one of the greatest sportswomen alive to racist and sexist tropes and turning a second great sportswoman into a faceless prop. https://t.co/YOxVMuTXEC

— J.K. Rowling (@jk_rowling) September 10, 2018

The detractors included author JK Rowling, who said: "Well done on reducing one of the greatest sportswomen alive to racist and sexist tropes and turning a second great sportswoman into a faceless prop."

Knight responded to the criticism by pointing out that he had drawn an unflattering portrayal of Australian male tennis star Nick Kyrgios "behaving badly".

"Don't bring gender into it when it's all about behaviour," he said.