Nick Kyrgios' swipe at Serena Williams in the wake of her quarter-final Australian Open win.

Nick Kyrgios… needs to stay off Twitter.

The 23-year-old – who was eliminated from the Australian Open in round one – has decided to take a swipe at quarter-finalist Serena Williams.

The Australian tennis player weighed in on recently resurfaced comments Olympic swimmer Leisel Jones made in July last year that Williams would “flog” Novak Djokovic in a tennis match.

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Jones was on the Today show discussing the rule preventing women from entering the Tour de France.

“Females are just as good at sport as men are if not better. And we can go back to that Serena Williams. I think if we were to put Novak Djokovic and we put Serena Williams next to him, I think she would flog him every day over,” she said.

On Monday, Australia’s Andrew Harris, who is still competing in the men’s doubles, shared a clip of the conversation with the delightfully respectful comment: “[Leisel Jones] thinks Serena would “flog” Djokovic?! She would barely even win a point let alone a game. #getaclue,” tagging his friend Nick Kyrgios.

Kyrgios then retweeted Harris’ comments, adding a crying with laughter face emoji.

???? https://t.co/4i8r0ZccFm

— Nicholas Kyrgios (@NickKyrgios) January 21, 2019

It’s not the first time Kyrgios has made news this week because of his social media behaviour.

Over the weekend, he tweeted a controversial response to praise of 19-year-old Alex De Minaur, who is currently ranked first in Australia.

In response to a tweet commending De Minaur's efforts against Rafael Nadal at the Australian Open, Kyrgios reminded everyone that he actually beat Nadal when he was 19.

"Lol this keeps getting better and better," he wrote.

Krygios also posted an Instagram story last Wednesday night, seemingly criticising Hewitt for watching De Minaur's match at the Australian Open.

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