Stefanos Tsitsipas' tantrum caused him mum to give him a stern court-side telling off. (CNN) It seems even being one of the best, highest-paid tennis players in the world isn't enough to escape a. He was a big change in my tennis since then, he is a very experienced tennis coach with lot’s of on-court knowledge, a very conventional way of technique development and a unique cast of mind on the tennis court. He is my tennis coach back home until today. Stefanos Tsitsipas is aiming to become the first back-to-back champion at the Nitto ATP Finals since Novak Djokovic in 2015.

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Greek tennis star Stefanos Tsitsipas says Nick Kyrgios is a hyperactive type of person and he absolutely hates to lose. Kyrgios, who has been often criticized for his commitment to tennis, left the court disappointed after losing a doubles match with Tsitsipas at the Citi Open in Washington.

'He is very hyperactive. Hates to lose. Trust me. He just hates to lose. I didn’t expect it myself,” Tsitsipas said from quarantine in Melbourne on the No Challenges Remaining podcast. “We played doubles in Washington DC and when he came off the court he was so disappointed, so frustrated and I was in shock.

I didn’t think he would react that way”.

Tsitsipas says Kyrgios likes attention

Over the last week, Kyrgios drew attention to himself by calling out 17-time Grand Slam champion Novak Djokovic. Kyrgios believes that Djokovic has made some mistakes and that he should be held accountable for his actions.

Kyrgios compared Djokovic to one of the greatest basketball players of all-time, saying the Serb is the LeBron James of tennis. Tsitsipas acknowledged that some love Kyrgios for his personality but some don't. 'Nick, he is the black sheep of the ATP.

He likes to do unpredictable stuff. He likes attention, let’s not refute that. And that’s totally normal. There is nothing wrong with that,” Tsitsipas said. 'He has his own personality, which turns out, some people love it.

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A lot of people hate it and don’t understand it. But there are some people that are so into it. I think it’s totally fine and our sport needs that. It’s entertainment. It’s fun. It’s something unique and special that not many players have.

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“I wouldn’t say we share a very close friendship but he does FaceTime me from time to time, at complete random times. Sometimes 1am. I don’t get it”.