Caster Semenya from South Africa still hopes to win a third gold medal at 800 meters at the 2020 Tokyo Olympics. However, she will not qualify for this year's World Athletics Championships because of the testosterone level and the restrictions on intersex athletes to attend certain women's events following the recent legal ruling in a running, high-profile trial.
A Swiss court has overturned a June ruling that allowed 28-year-old Semenya to sign her signature race earlier this summer.
"I am very disappointed not to be able to defend my hard-earned title," Semenya said Tuesday. "But this will not stop me from continuing my fight for the human rights of all athletes involved."
The Track Board, the International Federation of Athletics Federations, has attempted to limit testosterone levels for certain athletes in certain events and argues that those with higher levels of testosterone gain an unfair advantage. Semenya would still be allowed to compete if her levels were lowered by hormone therapy, but she refused to do so.
I.A.A.F. This rule applies to athletes with an X and a Y chromosome, the standard pattern for men, and therefore testosterone in the male area.
In May, the I.A.A.F. won support for his position in the Arbitration Court for Sport. The court said limiting testosterone levels was discriminatory but necessary to ensure a level playing field for women. This verdict was overturned by the Swiss court in June.
The recent ruling by the Swiss Federal Supreme Court reverses that. It prevents Semenya from running at distances of 400 meters to a mile, including her preferred distance of 800 meters. The I.A.A.F. She said she can ride longer or shorter races.
Semenya has always identified herself as a female. She won the 800 meters in the last two Olympics and won three world titles, including 2017 last May and Stanford, California, in June.
The World Championships will be held in Doha from the end of September.
This is an evolving story and is updated.