400m Hurdles

World Athletics Championships 2019: American Dalilah Muhammad relishes prospect of breaking her own 400m hurdles world record

Muhammad's display sliced more than one-tenth of a second off the previous record of 52.34sec, set by Russia's Yuliya Pechonkina in 2003, and has led many wondering if the 52-second barrier may fall

IAAF World Athletics Championships 2017 medal tally: USA dominate with 1-2 finish in triple jump, 400m hurdles

Here's a look at the medals tally after Day 7 of IAAF World Athletics Championships 2017 in London where Americans continued to dominate.