Caster Semenya returned to the track with victory in the 2000 metres at the Meeting de Montreuil in France as her appeal against proposed rules demanding she lower her testosterone levels continues.
The double Olympic champion at 800 metres was running for just the second time since losing a landmark case at the Court of Arbitration for Sport (CAS) against the International Association of Athletics Federations (IAAF), the world governing body of track and field.
Semenya had brought her case against the IAAF after it introduced new rules dictating some athletes like her with differences in sexual development (DSDs) can only race in distances between 400 metres and a mile if they take medication to lower their testosterone levels.
The South African athlete has since begun a further appeal at the Swiss Federal Tribunal, which decided to provisionally suspend the introduction of the IAAF's new rules last week.
Semenya crossed the line in 5'38"19, just edging Ethiopa's Hawi Feysa and Adanech Anbesa who finished with 5'38''66 and 5'39''90 respectively.
Her victory came just hours after she was named in South Africa's provisional squad for the World Championships in Doha, Qatar, which run from September 28 - October 6.
Semenya's participation in the 800 metres -- her preferred event -- depends on the outcome of her appeal with the Swiss Federal Tribunal's suspension of the new rules only in place until June 25.
Semenya is set to compete again in the 3,000 metres at the Prefontaine Classic in Stanford, California on June 30.