Williams' heated exchanges with an umpire at the tournament final this week have stirred the tennis world.
Apart from being levied three code violation, Serena was later fined United States dollars 17,000, stirring the tennis world and triggering a broader debate about double standards towards men and women in the sport.
"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", the author tweeted on Monday.
But he denies this in the video above.
While losing Saturday's final to Japan's Naomi Osaka, Williams smashed her racket and called the umpire a "thief" and "liar".
Ramos is seen in the background of the comic, asking Williams's opponent if she can "just let her win".
The Australian newspaper at the centre of a race row over a Serena Williams cartoon has dedicated its entire front page in support of the artist.
Knight responded on Twitter to a user who accused him of not treating male players the same way: "Don't bring gender into it when it's all about behavior".
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She was docked $10,000 for verbally using the umpire, $4,000 for being coached during the game and $3,000 for breaking a racket.
"W$3 e can not measure ourselves by what we think we should also be able to get away with", she wrote for the New York Times this week. "Here is the story of a white man who had never met an assertive black woman like me". It obliterates the fact that she is one of the greatest athletes of all time.
READ - Is Serena Williams a bad loser?
Williams has won the Australian Open singles title seven times at Melbourne Park, including in 2017 when she was pregnant.
Williams was unhappy at the violation call and complained to Ramos she hadn't taken any signals. I'd also stand by the claim that the best cartoons help us see something with clarity or make connections that crystallise a complex issue, making it immediately readable.
"Black women are constantly being reminded by society's beauty standard that we're too dark-skinned, our hair is not straight enough, our lips are too big, our thighs are too large and that any emotion we feel outside of pure ecstasy is anger", she said.
"In her straight sets loss to Naomi Osaka, Williams was simply outplayed and lost her temper in a enormous and ill-disciplined blow-up".
"Freedom of speech doesn't mean freedom above criticism", she said.