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 No 2 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.