Nick Kyrgios has decided to dig up old skeletons after siding with world No.8 Holger Rune in his current feud with ATP veteran Stan Wawrinka.

Kyrgios couldn’t help but throw a cheeky barb in Wawrinka’s direction after video of his latest heated exchange with Rune emerged online.

WATCH THE VIDEO ABOVE: Holger Rune in heated exchange with Stan Wawrinka at the net.

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After suffering an upset loss to Wawrinka in third round at Indian Wells on Monday, Rune could be heard making a sarcastic remark to his opponent in response to a parting message Wawrinka gave him the last time they played.

Last November, Wawrinka gave the 19-year-old some not-so-friendly “advice” after the youngster beat him.

“My advice to you is that you stop acting like a baby on the court, OK?” Wawrinka was heard saying.

Apparently having kept the receipt, Rune fired back with his own barb after their latest clash.

“You’ve got nothing to say now?” Rune said on Monday.

Clearly not expecting it, Wawrinka was momentarily speechless, before asking: “What do you want me to say?” and then walking off to shake the umpire’s hand.

Holger Rune (right) and Stan Wawrinka in a heated exchange at the net. Credit: Tennis TV

More was said in the heated exchange as they began to go their separate ways, but on-court microphones couldn’t pick up what they were saying.

The frosty moment made headlines around the world, and has now been amplified after Kyrgios decided to weigh in.

“Hahahahaha yeah all good when you win … typical,” Kyrgios wrote on his Instagram story, sharing a video of the moment.

“@holgerrune with you my brother.”

It comes eight years after Kyrgios’s infamous “girlfriend” sledge towards Wawrinka at the Canadian Open.

The enigmatic star was sanctioned heavily for telling Wawrinka, “(Thanasi) Kokkinakis banged your girlfriend. Sorry to tell you that, mate”.

Meantime, Rune has faced backlash over his conduct towards Wawrinka, but has doubled down on his behaviour.

Holger Rune isn’t backing down from what he said. Credit: Harry How/Getty Images

“Before you write hate or shitty comments on my or any account you should be aware of how the majority read your comment and see you as unintelligent,” Rune wrote on his own Instagram story.

“Harsh judgements are handed so people feel better about themselves, but everyone (if of average or above average intelligence) can see that they are hurting and have been brought down by something that has them feeling defensive (jealousy) – so they become critical of others hoping to restore their self-esteem. Needless to say, with no luck.”

Wawrinka was also asked about it after the match.

“He is making a reputation that he will regret,” Wawrinka said of Rune.

Nick Kyrgios pleads guilty to assaulting ex-girlfriend.

Nick Kyrgios pleads guilty to assaulting ex-girlfriend.