Iga Swiatek, a self-described "control freak," is taking new precautions after a doping case she described as "probably, like, the worst time in my life." Jannik Sinner, meanwhile, acknowledged that his on his mind entering the season's first Grand Slam.

Doping is a topic that shadowed tennis in 2024 and is sure to be a talking point as the 2025 Grand Slam season gets going at the Australian Open

It is a topic that shadowed tennis in 2024 and is still a talking point as the 2025 Grand Slam season opens at the Australian Open on Sunday (Saturday EST): doping and the cases involving Jannik Sinner — which is still not resolved — and Iga Swiatek.

Jannik Sinner is defiant in his innocence despite the consistent jibes levelled at him by Nick Kyrgios who has been heavily critical of the World No.1 since he tested positive twice for the substance Clostebol which was confirmed in November.

Jannik Sinner talked for the first time about Nick Kyrgios, during the media day of the Australian Open 2025. The Italian was quite clear with his words in the press conference that precedes his first round, scheduled between Monday and Tuesday, responding (so to speak) to the Australian's provocations regarding the Clostebol doping scandal.

Nick Kyrgios has vowed to turn his potential match against Jannik Sinner into "an absolute riot" if they meet at the Australian Open. Kyrgios, who has been a vocal critic of world No. 1 and defending champion Sinner over his two positive doping tests last year,

ATP chairman Andrea Gaudenzi has insisted Jannik Sinner's doping case was "run by the book" with no preferential treatment, and expressed confidence that tennis would survive should the Italian be banned.

World number one Jannik Sinner said Friday he did not know when the highest court in sport will deliver its verdict as ATP chairman Andrea Gaudenzi stressed the Italian's doping case was "run by the book".

World number one Jannik Sinner said Friday he had done nothing wrong as ATP chairman Andrea Gaudenzi stressed the Italian's doping case was "run by the book" with no preferential treatment. "I am 100 percent sure that there has not been any preferential treatment.