South African track star Caster Semenya "doesn't give a damn" about critics' whispers she was born with something that would help her dominate the spectrum of women's sports: a penis.

The 18-year-old athlete, an unknown weeks ago whose out-of-the-blue ascent resulted in her first 800-meter world title Wednesday's World Track and Field Championships, has been ordered by the sport's commissioning office, IAAF, to undergo a gender test after her breakout performance.

• TAGS

• Caster Semenya
• Gender Test
• Sex Change
• South Africa
• Track and Field