Kyrgios described Sinner and Iga Swiatek’s positive doping tests as “disgusting” as he spoke to the media ahead of his return to action after a long injury lay-off.
The combative Australian has been an outspoken critic of Sinner since he escaped a ban following a positive doping test after an anabolic steroid was found to be in his system.
The World Anti-Doping Agenda have appealed a decision by the International Tennis Integrity Agency to clear Sinner of blame and Kygios piled the pressure on the defending Australian Open champion as he spoke to the media in Brisbane.
“I have to be outspoken about it because I don’t think there’s enough people that are speaking about it. I think people are trying to sweep it under the rug.