Iga Swiatek, a self-described “control freak,” is taking new precautions — including holding on to extra samples of medicine she takes, in case they need to be tested at some point — after a doping case she describes as probably the worst time in her life.

The topic of doping cases involving tennis players Jannik Sinner and Iga Swiatek remains a talking point as the 2025 Grand Slam season opens at the Australian Open.

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.

As the Australian Open 2025 approaches, several key storylines are emerging. Jannik Sinner and Iga Swiątek are determined to overcome the lingering shadow of doping allegations that have overshadowed the sport.

Jannik Sinner, the world's top-ranked tennis player, will go to sport's highest court in April for the World Anti-Doping Agency's appeal that seeks to ban him from the sport for at least one year.

The men's world No. 1 could face a two-year ban. Here's what to know about the doping proceedings against him so far

World number one Jannik Sinner's doping hearing will start on April 16, the Court of Arbitration for Sport (CAS) said on Friday.

World number one Jannik Sinner will have his hearing into allegations of doping at the Court of Arbitration for Sport on April 16-17, the Lausanne-based body said on Friday.The World Anti-Doping Agency appealed after the International Tennis Integrity Agency (ITIA) cleared Sinner after he tested positive twice for the banned steroid clostebol in March last year.

The World Anti-Doping Agency's appeal date has been revealed as the doping body seeks to ban Sinner from the sport for at least one year.