Two-time Grand Slam champion Simona Halep has been banned for four years for two separate anti-doping rule violations, the International Tennis Integrity Agency said Tuesday. Halep who has won at Wimbledon and the French Open, has been provisionally suspended since October last year after testing positive for banned blood-booster Roxadustat at the US Open last … Continuă lectura Simona Halep announces appeal of 4-year ban over doping violations