Nick Kyrgios takes aim at 'selfish' Alexander Zverev after viral party video despite promising to isolate

'This tennis world ... seriously how selfish can you all get?' asks the Australian

Novak Djokovic in action against Viktor Troicki during their match for the Adria Tour tennis tournament in Belgrade, Serbia. EPA

Bulgaria's Grigor Dimitov and Germany's Alexander Zverev at the trophy ceremony during the Adria Tour at Novak Tennis Centre in Belgrade, Serbia. Reuters

Germany's Alexander Zverev in action during the Adria Tour. Reuters

Djordje Djokovic and Goran Ivanisevic during a press conference announcing the cancellation of the Adria Tour final. Reuters

Djordje Djokovic and Goran Ivanisevic announce the cancellation of the Adria Tour final after Grigor Dimitrov tested positive for the coronavirus. Reuters

Novak Djokovic hugs Jelena Jankovic during a tennis doubles against Serbia's Nenad Zimonjic and Olga Danilovic at a charity exhibition hosted by Novak Djokovic, in Belgrade. AFP

Serbia's Viktor Troicki, Nenad Zimonjic, Dusan Lajovic, Novak Djokovic, Austria's Dominic Thiem and Bulgaria's Grigor Dimitrov during Adria Tour at Novak Tennis Centre in Belgrade, Serbia, June 12. Reuters

Serbia's Novak Djokovic with his wife Jelena in the stands in Belgrade. Both have contracted Covid-19. Reuters

Novak Djokovic during Adria Tour at Novak Tennis Centre in Belgrade, Serbia, June 14. Reuters

Serbia's Novak Djokovic poses for a picture before the match with Serbia's Pedja Krstin. Reuters

Serbia's Novak Djokovic poses next to Biserka Petrovic during a press conference in Zadar, Croatia on June 19. Reuters

Serbia's Novak Djokovic poses for picture next to Croatia's Marin Cilic and Borna Coric. Reuters

Grigor Dimitrov, centre, with Alexander Zverev, left, and Novak Djokovic courtside at the Adria Tour. EPA

Grigor Dimitrov, centre, with Alexander Zverev, left, and Novak Djokovic at the Adria Tour. EPA

Grigor Dimitrov plays basketball with Novak Djokovic in Zadar, Croatia, during the Adria Tour. AP Photo

Spectators watch a match during the Adria Tour, an exhibition tournament, in Zadar, Croatia. AP Photo

Grigor Dimitrov, right, poses for photos with Borna Coric during their Adria Tour semifinal in Zadar, Croatia. AP Photo

From left, Dusan Lajovic, Viktor Troicki, Grigor Dimitrov, Filip Krajinovic, Dominic Thiem, Alexander Zverev and Novak Djokovic during the Adria Tour. AFP

Grigor Dimitrov, facing camera, shakes hands with Dominic Thiem at the end of their match at the Adria Tour. AFP

Grigor Dimitrov greets Dominic Thiem at the end of their match at the Adria Tour. AFP

Dominic Thiem serves to Grigor Dimitrov during the Adria Tour in Belgrade, Serbia. Getty Images

Dusan Lajovic serves to Grigor Dimitrov during a match at the Adria Tour in Belgrade. AFP

Nick Kyrgios let rip at "selfish" fellow tennis star Alexander Zverev after the German was seen partying despite promising to self-isolate following Novak Djokovic's coronavirus-hit Adria Tour.

Zverev was part of the exhibition event organised by the world No 1 where social distancing was minimal, matches took place in front of thousands of fans and players were even seen at a nightclub, despite the pandemic.

Djokovic, Grigor Dimitrov, Borna Coric and Viktor Troicki all subsequently tested positive for Covid-19.

While Zverev tested negative, he released a statement afterwards vowing to self-isolate, only to be spotted at a busy bar, apparently over the weekend, in footage that went viral.

Kyrgios, who had slammed the decision to hold the Adria Tour as "bone-headed", said he was unhappy with the behaviour of some of the biggest names in the sport.

"So I wake up and I see more controversial things happening all over the world. One that stuck out for me was seeing 'Sacha' Zverev again man, again, again, how selfish can you be?" he said on Instagram.

"If you have the audacity to put out a tweet that you made your management write on your behalf saying you're going to self-isolate for 14 days and apologising to the general public for putting their health at risk, at least have the audacity to stay inside for 14 days, my god."

The flamboyant Australian added: "This tennis world ... seriously how selfish can you all get?"

Zverev and Kyrgios, two of the most exciting players on tour, have history.

Ahead of this year's Australian Open, Zverev hit out at Kyrgios, who had provocatively performed push-ups when the German was serving double faults during the ATP Cup.

"I think there's a lot of young guys that are right now, no offence, just better than him," said Zverev, playing down Kyrgios's chances of winning a Grand Slam.