Olympic champion Dalilah Muhammad has broken one of the longest standing world records in women's athletics.
The 29-year-old clinched victory in the 400-metre hurdles at the US Championships in Des Moines, Iowa, clocking a time of 52.20 seconds.
She was 0.14 seconds faster than Russia’s Yuliya Pechonkina, who had set the previous world record 16 years ago.
Dalilah was already a notable runner because of her gold medal at the 2016 Rio de Janeiro Olympics in the same event.

Police detain organiser of Messi visit after Indian fans rip up seats
Patel dominates as Mumbai take Game 1 of United Series
UAE though to Arab Cup semi-finals after beating Algeria on penalties
Dubai Basketball claim thrilling win over Bayern Munich in EuroLeague
Salah in Liverpool squad for Brighton match
