Career
He captured a silver medal in the 68-kg class at the 2003 World Olympic Qualification Tournament in Paris, France, and later represented his nation South Africa at the 2004 Summer Olympics. Mahlangu qualified as a lone taekwondo fighter for the South African squad in the men"s featherweight class (68 kg) at the 2004 Summer Olympics in Athens, by placing second behind South of Korea"s Lee Won-jae and granting a berth from the World Olympic Qualifying Tournament in Paris, France. He failed to move beyond the opening round in a 7–11 defeat to Guatemalan taekwondo fighter and two-time Olympian Gabriel Sagastume.