Dalilah Muhammad (USA) poses with 2019 IAAF World Athletics Championships in the women's 400m hurdles and 4 x 400m relay and 2016 Rio Olympics gold medal in the 400m hurdles, Monday, Dec. 16, 2019, in Lake Balboa, Calif. Muhammad, the world record holder in the 400m hurdles at 52.16 seconds. is only the second female 400-meter hurdler in history, after Sally Gunnell, to have won the Olympic and World titles and broken the world record.
{}