. "51.96" . "51.93" . . "2016 Summer" . "50.97" . "53.96" . "50.41" . "49.85" . . "52.51" . . "52.45" . "400 metres" . "Olympic Games" . "400 m" . "400 metres at the 2016 Olympic Games" . "Athletics at the 2016 Summer Olympics \u2013 Women's 400 metres" . "2016" . "54.37" . . "2016 Olympics" . . "51.08" . . "52.79" . "52.37" . "52.33" . . "women's 400 metres" . "51.24" . . . . . "400 meters at the 2016 Summer Olympics" . "52.24" . "9th in the semi-finals" . "52.42" . "52.68" . . "X" . "Women's 400 m" . "Athletics at the 2016 Summer Olympics \u2013 Women's 400 metres" . "52.38" . . "53.22" . "400 m" . . "53.83" . "49.51" . "52.52" . "51.25" . . "51.53" . "53.08" . "52.85" . "52.65" . "51.62" . "53.51" . "2016 Rio Olympian" . "400 metres race" . "Women's 400 metres" . "400 meters" . . "women's 400 m" .