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,

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

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.

Simona Halep questioned the "big difference" in how doping cases are treated after world number two Iga Swiatek was handed a one-month drugs ban while the Romanian was out of action for over 18 months following two separate anti-doping violations.

Simona Halep has hit out at what she claims is a “big difference” between the way doping cases are handled in tennis. It was revealed on Thursday that world number two Iga Swiatek had been banned for one month – the majority of it served secretly as a provisional suspension – after testing positive for the angina drug trimetazidine.

Swiatek was provisionally suspended for 22 days between September 12 and October 4, meaning she will serve only eight further days of her ban after being handed a one-month suspen

Romanian questions why she was banned for more than 18 months for her drugs violation while the Polish world No 1 was suspended for 1 month.