Swiatek said she couldn't play over the fall owing to 'personal matters'. That didn't really explain what was going on

Iga Swiatek is the second high-profile tennis player to test positive for a banned substance this year, joining Jannik Sinner. While Sinner, currently the No. 1 ranked man, was fully cleared, Swiatek,

Swiatek said a batch of melatonin she used was contaminated with a banned substance, an explanation anti-doping authorities said they accepted after a probe.