Why has Halep been given four-year doping ban?

Simona Halep has been banned for four years for breaches of the Tennis Anti-Doping Programme .

The 31-year-old Romanian tested positive for banned substance Roxadustat at the US Open in August 2022 .

An independent tribunal determined Halep committed "intentional" anti-doping violations.

The Romanian has always denied knowingly taking the banned substance.

All of Romanian 's results from 2022 US Open in 2022 have been disqualified.

The independent tribunal is "comfortably satisfied" she committed a doping violation at the tournament.

She has stated her intention to appeal against the tribunal's decision at the Court of Arbitration for Sport .

If she is to avoid a four-year ban, she must prove her use of Roxadustat from another source was not intentional.