GENEVA, March 5 — Former Wimbledon and French Open champion Simona Halep had her four-year doping ban cut to nine months by the top court for global sport on Tuesday,making the formerworld number one eligible to return to competition immediately.

Halep was initially banned for four years for two separate anti-doping rule violations. But the Lausanne-based Court of Arbitration for Sport (CAS) ruled that her suspension should be reduced to nine months, a period she has already served.