Olympic champion Caster Semenya is all set to compete in 800m Diamond League race in Qatar before the new testosterone rile come to effect.

This will be the last time she can compete in her favorite event before the IAAF’s new rules requiring athletes with differences in sex development to take medication to reduce their testosterone level are introduced.

This rule will come into force by May eighth which will apply to female or intersex athletes with differences of sexual development (DSD) who have a blood testosterone level of five nmol/L or above. IAAF president called the ruling “very straightforward” and said that there would be no delays in implementing them despite CAS concerns there was not enough evidence to apply them to 1500m and mile.

Semenya’s agent has confirmed that the South African has flown to Doha for the event after the last minute decision to run in the 800m on Friday. She will compete against European champion Lynsey Sharp, Olympic medalist Margaret Wambui and Francine Niyonsaba who recently revealed that she has DSD characteristics similar to Semenya.