Caster Semenya

In 2020, Semenya announced that she decided to switch to 200 meters at the 2020 Tokyo Olympics, in order to avoid 400m to one mile ban. In order to qualify for the 200 meters, Semenya must achieve the qualifying time of 22.80. She previously tried 5000 m at South African championship in 2019.

In April 2018, the IAAF announced new "differences of sex development" rules that required athletes with specific disorders of sex development, testosterone levels of 5 nmol/L and above, and certain androgen sensitivity to take medication to lower their testosterone levels, effective beginning 8 May 2019. Due to the narrow scope of the changes, which also apply to only those athletes competing in the 400m, 800m, and 1500m, many people thought the rule change was designed specifically to target Semenya.

Semenya has appealed the decision to the Federal Supreme Court of Switzerland. On 3 June 2019, the Swiss Federal Supreme Court advised that they had "super-provisionally instructed the IAAF to suspend the application of the 'Eligibility Regulations for the Female Classification for athletes with differences of sex development' with respect to the claimant [Semenya]" until the court decides whether to issue an interlocutory injunction. On July 30, 2019 the Swiss Federal Supreme Court reversed its earlier ruling that had suspended the Court of Arbitration for Sport decision and the IAAF rules. For that reason, Semenya missed the 2019 World Athletics Championships in Doha in October 2019, while continuing her appeal.

In July 2019, Semenya said that the ongoing issue has "destroyed" her "mentally and physically".

In September 2019, Semenya joined the South African SAFA Sasol Women's League association football club JVW F.C., owned by Janine van Wyk.

On 19 June 2018, Semenya announced that she would legally challenge the IAAF rules. On 1 May 2019, the Court of Arbitration for Sport rejected her challenge, paving the way for the new rules to come into effect on 8 May 2019. During the legal challenge by Semenya, the IAAF amended the regulations to exclude hyperandrogenism associated with the 46,XX karyotype and clarified that the disorders of sex development affected by the regulations are specific to the 46,XY karyotype. The legal case divided commentators such as Doriane Coleman, who testified for the IAAF, arguing that women's sport requires certain biological traits, from commentators such as Eric Vilain, who testified for Semenya, arguing that "sex is not defined by one particular parameter ... for many human reasons, it's so difficult to exclude women who've always lived their entire lives as women — to suddenly tell them 'you just don't belong here.'"

After the controversy of the previous year, Semenya returned to action with a moderately low profile, running only 1:58.61 at the Bislett Games as her best prior to the World Championships. During the championships, she easily won her semi-final heat. In the final, she remained in the front of the pack leading into the final straightaway. While she separated from the rest of the field, Mariya Savinova followed her, then sprinted past Semenya before the finish line, leaving her to finish second. In 2017, Savinova was banned for doping and her results were disqualified, resulting in Semenya being awarded the gold medal.

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.

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 October 2016, the IAAF announced that Semenya was shortlisted for women's 2016 World Athlete of the Year.

The IAAF policy on hyperandrogenism, or high natural levels of testosterone in women, was suspended following the case of Dutee Chand v. Athletics Federation of India (AFI) & The International Association of Athletics Federations, in the Court of Arbitration for Sport, decided in July 2015. The ruling found that there was a lack of evidence provided that testosterone increased female athletic performance and notified the IAAF that it had two years to provide the evidence.

Semenya married her long-term partner, Violet Raseboya, in December 2015.

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.

Caster Semenya was chosen to carry the country's flag during the opening ceremony of the 2012 Summer Olympics. She later won a silver medal in the women's 800 metres of these games, with a time of 1:57.23 seconds, her season's best. She passed six competitors in the last 150 metres, but did not pass world champion Mariya Savinova of Russia, who took gold in a time of 1:56.19, finishing 1.04 seconds before Semenya. During the BBC coverage after the race, former British hurdler Colin Jackson raised the question whether Semenya had thrown the race, as the time that had been run was well within her capability, though in fact Semenya had at that point only once in her life run faster than Savinova's winning time, when winning the 2009 World Championships.

Following her victory at the 2009 World Championships, it was announced that she had been subjected to sex testing. She was withdrawn from international competition until 6 July 2010 when the International Association of Athletics Federations (IAAF) cleared her to return to competition. In 2010, the British magazine New Statesman included her in a list of "50 People That Matter 2010".

In March 2010, Semenya was denied the opportunity to compete in the local Yellow Pages Series V Track and Field event in Stellenbosch, South Africa, because the IAAF had yet to release its findings from her sex test.

On 6 July, the IAAF 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. 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.

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. 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. Eventually, she was forced to skip the games due to injury.

In December 2009, Track and Field News voted Semenya the Number One Women's 800-metre runner of the year.

In November 2009, South Africa's sports ministry issued a statement that Semenya had reached an agreement with the IAAF to keep her medal and award. Eight months later, in July 2010, she was cleared again to compete in women's competitions.

News that the IAAF requested the test broke three hours before the 2009 World Championships 800 m final. IAAF president Lamine Diack stated, "There was a leak of confidentiality at some point and this led to some insensitive reactions." The IAAF's handling of the case spurred many negative reactions. A number of athletes, including retired sprinter Michael Johnson, criticised the organisation for its response to the incident. There was additional outcry from South Africans, alleging undertones of European racism and imperialism embedded in the gender testing. Many local media reports highlighted these frustrations and challenged the validity of the tests with the belief that through Semenya's testing, members of the Global North did not want South Africans to excel.

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.

In July, Semenya participated in the 2008 World Junior Championships in the 800 m and did not qualify for the finals. She won gold at the 2008 Commonwealth Youth Games with a time of 2:04.23.

Mokgadi Caster Semenya OIB (born 7 January 1991) is a South African middle-distance runner and 2016 Olympic gold medalist. She won gold in the women's 800 metres at the 2009 World Championships with a time of 1:55.45, the 2016 Summer Olympics, and the 2017 World Championships in her new personal best, 1:55.16. After the doping disqualification of Mariya Savinova, she also was awarded gold medals at the 2011 World Championships and the 2012 Summer Olympics, all in the 800 metres.