Nick Kyrgios slammed Novak Djokovic for issuing a list of demands for quarantined players in Melbourne and Adelaide ahead of Australian Open.
Nick Kyrgios said he had always been emotional and found it tough spending so long away from his Canberra home and family while on tour, admitting there were times when he was "seriously depressed".
Nick Kyrgios was quick to have his say after Novak Djokovic was sensationally disqualified from the US Open for hitting a woman line judge in the throat with a ball bashed away in disgust after losing his serve.
After pulling out of the US Open, Nick Kyrgios has said that there is a very "slim chance" of him playing in this year's French Open.
Nick Kyrgios, ranked just 40 but a major drawcard, last month blasted the ATP as "selfish" for pressing ahead with plans for the US Open, which is scheduled to start on August 31.
Nick Kyrgios hit back at Borna Coric after the latter said he did not care about what Kyrgios' criticism.
Best known for his flamboyant persona and spectacular on-court tantrums, Nick Kyrgios has shown a different side in recent weeks as he took Novak Djokovic and other top players to task for their "stupidity" and risky behaviour.
Dominic Thiem played in the Belgrade leg of last month's ill-fated tournament organised by world number one Novak Djokovic.
Alexander Zverev and Nick Kyrgios were slated to join Dominic Thiem at an exhibition tournament from July 13-19 in Berlin.
Alexander Zverev was heavily criticised after viral footage emerged of him partying in a busy bar despite pledging to "follow self-isolating guidelines" after playing in Novak Djokovic's coronavirus-hit Adria Tour.
Nick Kyrgios was involved in a Twitter battle with Boris Becker after the Australian took issue with fellow-tennis player Alexander Zverev.
After testing negative for coronavirus, Alexander Zverev had released a statement vowing to self-isolate, only to be spotted at a busy bar, apparently over the weekend, in footage that went viral.
Nick Kyrgios, Dominic Thiem and Alexander Zverev have been signed up to take part in Berlin.
Novak Djokovic has been criticised for hosting the exhibition tournament that has led to a slew of players testing positive for coronavirus, including himself.
Novak Djokovic appears doomed never to be held in the same saintly esteem as Roger Federer or Rafael Nadal, the undisputed 'people's champions' of tennis.
New York Governor Andrew Cuomo gave the green light for the US Open to be held from August 31 to September 13.
Nick Kyrgios suggested it was too early for the Flushing Meadow Grand Slam, joining other players in expressing reservations, including world number one Novak Djokovic.