Caster Semenya OIB (born 7 January 1991) is a middle-distance runner and winner of two Olympic medal and three World Championships in the women's 800 metres. She first won gold at the World Championships in 2009 and went on to win at the 2016 Olympics and the 2017 World Championships, where she also won a bronze medal in the 1500 metres. After the doping disqualification of Mariya Savinova, she was also awarded gold medals for the 2011 World Championships and the 2012 Olympics.
Following Semenya's victory at the 2009 World Championships, she was made to undergo sex testing and cleared to return to competition the following year. The decision to perform sex testing sparked controversy in the sporting world and in Semenya's home country of South Africa. Later reports disclosed that Semenya has the condition 5α-Reductase 2 deficiency (5αR2D) and natural testosterone levels in the typical male range.
In 2019, new IAAF (World Athletics) rules came into force for athletes like Semenya with certain disorders of sex development (DSDs) requiring medication to suppress testosterone levels in order to participate in 400 m, 800 m, and 1500 m women's events. Semenya refused to undergo the treatment, which is now mandatory. She has filed a series of legal cases to restore her ability to compete in these events without testosterone suppression, arguing that the World Athletics rules are discriminatory.
Semenya attended Nthema Secondary School and the University of North West as a sports science student.Lucas, Ryan (22 August 2009). SAfrican in gender flap gets gold for 800 win www.wistv.com. Associated Press. She began running as training for association football.
Although Semenya was assigned female at birth, she has the condition 5α-Reductase 2 deficiency (5-ARD). This condition only affects genetic males with XY chromosomes. Individuals with 5-ARD have normal male internal structures that are not fully Virilization during the development of the reproductive system in utero, due to low levels of the hormone dihydrotestosterone (DHT). As a result, the external Sex organ may appear ambiguous or female at birth.
Semenya has said that she was born with a vagina and internal cryptorchidism but that she has no uterus or and does not Menstruation. Her internal testes produce natural testosterone levels in the typical male range. Semenya has rejected the label of "intersex", calling herself "a different kind of woman."
In August 2009, Semenya won gold in the 800 metres at the World Championships with a time of 1:55.45 in the final, again setting the fastest time of the year.
In December 2009, Track and Field News voted Semenya the Number One Women's 800-metre runner of the year. Track and Field News, Vol 8. Number 59, 22 December 2009.
The sex test results were never published officially, but some results were leaked in the press and were widely discussed, resulting in at the time unverified claims about Semenya having an intersex trait.
In November 2009, South Africa's sports ministry issued a statement that Semenya Caster Semenya Strong Finish Women's 400m | Brussels Diamond League . Retrieved on 10 September 2016. had reached an agreement with the IAAF to keep her medal and award.Jere Longman "South African Runner’s Sex-Verification Result Won’t Be Public" The New York Times, 19 November 2009. Eight months later, in July 2010, she was cleared again to compete in women's competitions.
The IAAF said it confirmed the requirement for a sex verification test after the news had already been reported in the media, denying charges of racism and expressing regret about "the allegations being made about the reasons for which these tests are being conducted". "SA to take up Semenya case with UN", The Times SA, 21 August 2009 The federation also explained that the motivation for the test was not suspected cheating but a desire to determine whether she had a "rare medical condition" giving her an "unfair advantage". The president of the IAAF stated that the case could have been handled with more sensitivity.
On 7 September 2009, Wilfred Daniels, Semenya's coach with Athletics South Africa (ASA), resigned because he felt that ASA "did not advise Ms. Semenya properly". He apologised for personally having failed to protect her. ASA President Leonard Chuene admitted on 19 September 2009 to having subjected Semenya to testing. He had previously lied to Semenya about the purpose of the tests and to others about having performed the tests. He ignored a request from ASA team doctor Harold Adams to withdraw Semenya from the World Championships over concerns about the need to keep her medical records confidential.
Prominent South African civic leaders, commentators, politicians, and activists characterised the controversy as Racism, as well as an affront to Semenya's privacy and human rights. On the recommendation of South Africa's Minister for Sport and Recreation, Makhenkesi Stofile, Semenya retained the legal firm Dewey & LeBoeuf, acting pro bono, "to make certain that her civil and legal rights and dignity as a person are fully protected". Dewey takes up Semenya case in IAAF dispute – Legalweek Magazine Dewey & LeBoeuf to advise Caster Semenya – The Times Dewey & LeBoeuf Retained to Protect Rights of South African Runner Caster Semenya – press release from Dewey & LeBoeuf. In an interview with South African magazine YOU Semenya stated, "God made me the way I am and I accept myself." Following the furore, Semenya received great support within South Africa, to the extent of being called a cause célèbre.
On 6 July, the World Athletics cleared Semenya to return to international competition. The results of the sex tests, however, were not released for privacy reasons. She returned to competition nine days later, winning two minor races in Finland.Yahoo News, 18 July 2010: Semenya easily wins again in Finland On 22 August 2010, running on the same track as her World Championship victory, Semenya started slowly but finished strongly, dipping under 2:00 for the first time since the controversy, while winning the ISTAF meet in Berlin. AP article
Not being in full form, she did not enter the World Junior Championships or the African Championships, both held in July 2010, and opted to target the Commonwealth Games to be held in October 2010.CBC, 21 July 2010: Semenya has eyes on Commonwealth Games She improved her season's best to 1:58.16 at the Notturna di Milano meeting in early September and returned to South Africa to prepare for the Commonwealth Games.Sampaolo, Diego (10 September 2010). Howe, Semenya, and Yenew highlight in Milan. IAAF. Retrieved 10 September 2010. Eventually, she was forced to skip the games due to an injury. "Injured Semenya pulls out of Commonwealth Games", The Hindu, 29 September 2010:
In November 2015, the World Anti-Doping Agency recommended Savinova and four other Russian athletes be given a lifetime ban for doping violations at the Olympics. On 10 February 2017, the Court of Arbitration for Sport (CAS) officially disqualified Savinova's results backdated to July 2010. The International Olympic Committee reallocated the London 2012 medals, and Semenya's silver was upgraded to gold.
On 16 July, she set a new national record for 800 metres of 1:55:33. On 20 August, she won the gold medal in the women's 800 metres at the 2016 Summer Olympics in Rio with a time of 1:55.28. The win reignited controversy over the rules on permissible testosterone levels; immediately after the race Lynsey Sharp, finishing sixth, broke into tears, having previously said that "everyone can see it's two separate races", while fifth-placed Joanna Jóźwik stated "I feel like the silver medalist ... I'm glad I'm the first European, the second white", to finish the race. Bioethicist Katrina Karkazis criticised the indignant response to Semenya's win as discriminatory.
Semenya set a new personal best for the 400 m of 50.40 at the 2016 Memorial Van Damme track and field meet in Brussels.
In a report explaining its decision, the IAAF wrote that there was a "broad medical and scientific consensus" that athletes with high testosterone can "significantly enhance their sporting potential" due to greater muscle mass, strength, and hemoglobin levels. The report added that "there is no other genetic or biological trait encountered in female athletics that confers such a huge performance advantage."
The IAAF's changes applied to eight different events—including the 400 m, 800 m, and 1500 m, which Semenya regularly competed in. Sports science Ross Tucker estimated that the new rules could make Semenya "five to seven seconds slower over 800 metres." Female athletes without a DSD are not subject to any testosterone limits.
On 15 April 2021, Semenya confirmed she would not try to make the Tokyo 2020 200 m qualifying standard. On 28 May 2021, Semenya ran a personal best of 15:32.15 in the 5000m, 22 seconds slower than the necessary time to be allowed to compete at the Olympics.
The case divided both legal and scientific commentators. Duke Law School professor and former middle-distance runner Doriane Lambelet Coleman argued that the organization's rules guaranteed a "protected space" for female athletes. Physician and genetics researcher Eric Vilain argued in favor of Semenya, claiming that "sex is not defined by one particular parameter... it's so difficult to exclude women who've always lived their entire lives as women." During the proceedings, the IAAF clarified that the regulations would only apply to DSD athletes with XY chromosomes. "IAAF told to suspend Semenya testosterone rules", 3 June 2019, ESPN.
In May 2019, the Court of Arbitration for Sport rejected Semenya's challenge in a 2–1 decision, paving the way for the new rules to come into effect. Although the CAS agreed with Semenya that the rules were discriminatory, it concluded that this discrimination was "a necessary, reasonable and proportionate means of achieving the IAAF's aim of preserving the integrity of female athletics".
That same month, Semenya appealed the decision to the Federal Supreme Court of Switzerland. The court provisionally suspended the World Athletics rules while deciding whether to issue an interlocutory injunction in June. However, this decision was reversed in July, leaving Semenya unable to compete in World Athletics races between 400m and one mile while her appeal continued.
The Swiss supreme court ultimately dismissed Semenya's appeal in September 2020. In its decision, the court affirmed that the CAS had the right to uphold World Athletics' rules "in order to guarantee fair competition for certain running disciplines in female athletics." The court also declared that because Semenya was "free to refuse treatment to lower testosterone levels," her "guarantee of human dignity" was not violated.
In February 2021, Semenya appealed the case to the European Court of Human Rights (ECtHR). In March 2023, World Athletics made its rules for Semenya and other DSD athletes even more restrictive, requiring them to lower their testosterone levels below a threshold of 2.5 nmol/L for at least 24 months before competing. The ECtHR ruled in Semenya's favor in a 4–3 decision in July 2023, finding that the competition rules had discriminated against her and infringed on her human rights. However, the decision did not overturn the rules themselves, and World Athletics stated that the regulations would "remain in place."
After a request from the Swiss government, Semenya's case was referred to the ECtHR's Grand Chamber in November 2023 for a final ruling.
On 10 July 2025, the Grand Chamber of the European Court of Human Rights upheld the 2023 decision of the Swiss Federal Tribunal, finding that Semenya’s appeal against World Athletics’ regulations for athletes with differences of sexual development “had not been properly heard.”
Semenya, who has since turned to coaching and is not seeking a return to competition, stated she would continue to fight on behalf of other DSD athletes.
In 2012, Semenya was awarded South African Sportswoman of the Year Award at the SA Sports Awards in Sun City. Semenya received the bronze Order of Ikhamanga on 27 April 2014, as part of Freedom Day festivities.
Semenya married her long-term partner, Violet Raseboya, in December 2015 (traditional ceremony) and January 2017 (civil ceremony). They have two daughters, one born in 2019 and another in 2022. Their first daughter was conceived through artificial insemination.
In October 2016, the IAAF announced that Semenya was shortlisted for women's 2016 World Athlete of the Year.
Semenya was named one of Time magazine's 100 Most Influential People of 2019.
Semenya was one of the athletes whose cases were profiled in Phyllis Ellis's 2022 documentary film . "New Canadian documentary explores Caster Semenya story in human-rights terms". Canadian Running, April 29, 2022.
On 31 October 2023, Semenya's memoir, The Race to Be Myself, was published by #Merky Books (an imprint of Penguin Random House UK). In The Guardian, Emma John wrote that Semenya's "timely, sometimes angry memoir inspires compassion" while acknowledging that it presented mainly her side of the controversy about her running career. The book was named a New York Times Book Review Editors' Choice in December 2023.
2010
2011
2012 Olympics
2015 testosterone rule change
2016
2017
2018 testosterone rule change
2019 football career
Tokyo 2020 Olympics
2022 World Championships
Legal cases against World Athletics
Competition record
2:04.23 2:03.16 4:16.43 2:02.00 4:25.70 1:56.72 4:08.01 2:02.10 4:12.93 3:41.30 In the 2011 World Championships and the 2012 Olympic Games, Semenya finished 2nd to Mariya Savinova, but Savinova was later disqualified due to failing an antidoping test, promoting Semenya to the gold medal in both races. 2:02.68 3:36.92 2:03.05 2:05.05 4:29.60 4:23.00 50.74 1:58.45 4:10.91 51.60 2:01.03 4:10.68 1:57.80 49.96 16:05.97 4:13.59 15:46.12
Works
Personal life and honours
See also
External links
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