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".

Tennis commentator Jonathan Overend believes Italy’s Jannik Sinner’s on-court achievements will be tainted if he receives a ban for failing doping tests.

This week, the 2025 tennis season began with Novak Djokovic and Nick Kyrgios revisiting the subject of doping. Elsewhere, Naomi Osaka discussed longevity vs. quality and the returning Belinda Bencic got a reality check for the good.

Nick Kyrgios criticized doping allegations involving Jannik Sinner and Iga Swiatek, calling it damaging to tennis. Sinner and Swiatek faced ITIA charges but were not severely penalized. As Kyrgios prepares for the Brisbane International,

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

Tennis star Novak Djokovic sees a lack of transparency and a perceived double standard in high-profile doping cases, saying players have been "kept in the dark" over Jannik Sinner's situation.