Just days away from his return to tennis at the Brisbane International, Nick Kyrgios hasn’t minced his words in referring to doping-related charges against Jannik Sinner and Iga Swiatek

Nick Kyrgios has said the doping charges against Jannik Sinner and Iga Swiatek are “disgusting for our sport” as he prepares to make his long-awaited return to tennis.

World number one Sinner, meanwhile, tested positive for anabolic steroid clostebol twice in March and the Italian could also face suspension from the sport.

Nick Kyrgios said the recent doping incidents involving Jannik Sinner and Iga Swiatek were "disgusting" for the sport, as the Australian slammed authorities on Saturday over what he saw as lenient treatment in their cases.

Nick Kyrgios says the high-profile doping cases involving Grand Slam winners Jannik Sinner and Iga Swiatek are "disgusting" for tennis.

Nick Kyrgios lashed out Saturday at what he believes is the lenient treatment of world tennis number one Italian Jannik Sinner for a failed drug test and said integrity in the sport was "awful".

During his tough rehabilitation process, Nick Kyrgios has dedicated himself to other activities related to the world of tennis. During the last edition of the US Open, for example, the Australian worked as a commentator for ESPN, interviewing players on the court at the end of their matches on several occasions.

Nick Kyrgios has launched a savage attack on tennis stars Jannik Sinner and Iga Swiatek for breaches of the sport's anti-doping program, labelling their conduct as "disgusting for our sport".