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,

Meanwhile, Swiatek was found to have been “at the lowest end of the range for no significant fault or negligence” after the 23-year-old Polish player explained that her doping violation was caused by a contaminated supply of the non-prescription medication melatonin, which she uses to help with jet lag and sleep issues.

The five-time Grand Slam champion has served 22 days of a one-month ban from tennis. Here's what you need to know

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.

The International Tennis Integrity Agency says five-time Grand Slam champion Iga Swiatek has accepted a one-month suspension after testing positive for the banned substance trimetazidine.

Iga Swiatek received a one-month ban after positive drug test and will be eligible to play in the Australian Open.

World number two Iga Swiatek has accepted a one-month suspension after testing positive for the prohibited substance trimetazidine (TMZ).