Oscar Leonard Carl Pistorius (; Afrikaans: [pisˈtɔrjus]; born 22 November 1986) is a South African former professional sprinter and convicted murderer. Both of his feet were amputated when he was 11 months old owing to a congenital defect; he was born missing the outside of both feet and both fibulae. Pistorius ran in both non-disabled sprint events and in sprint events for below-knee amputees. He was the tenth athlete to compete at both the Paralympic Games and Olympic Games.