Caster Semenya was only a teenager in 2009, an 18-year-old newcomer at her first major track meet, when she caused such a stir with her speed that organizers performed sex verification tests on her. Ever since that shocking situation at the world championships in Berlin, the South African runner has been fighting track and field's governing body for the right to run in what she describes as her natural form.Read more on NewsOK.com