The Harry Potter author fired back at a commenter who wrote that the athlete had the body of a man

By Lindsay Kimble
Updated July 11, 2015 02:10 PM
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JK Rowling/Twitter

J.K. Rowling has no time for the haters – especially if their target is her friend.

The Harry Potter author fired back at a Twitter user on Saturday who had harsh words for six-time Wimbledon victor Serena Williams.

The 49-year-old first shared a photo with the tennis champ on Saturday, showing her support of Williams prior to her Women’s finals match.

“I’m #TeamSerena today, because you don’t meet many super-talented people nicer than she is,” she wrote. “Go @serenawilliams!”

After Williams won, Rowling continued to show her support through another Tweet, writing, “What an athlete, what a role model, what a woman!”

One Twitter user’s reply, however, left the author up in arms.

“Ironic then that main reason for her success is that she is built like a man,” the user wrote to Rowling.

“Yeah, my husband looks just like this in a dress. You’re an idiot,” the star wrote back, sharing a photo of Williams clad in a red shift. Game. Set. Point – Rowling.

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Williams’s Saturday win completed her second “Serena Slam” – winning four Grand Slam tournaments in a row, starting with last year’s U.S. Open, then the Australia Open, the French Open and now Wimbledon.

Williams won 6-4, 6-4 on Centre Court at the Wimbledon Women’s finals against Spain’s Garbine Muguruza.