Olympic champion Dalilah Muhammad has set a new world record in the 400 metres hurdles when she ran a blistering 52.20 seconds in the rain at the United States national championships.
Muhammad’s time smashed the previous mark of 52.34 seconds set by Russian Yuliya Pechonkina in 2003.
Muhammad went out hard and quickly past the athletes outside her, including 2015 world silver medalist Shamier Little and American under-20 record holder Sydney McLaughlin.
McLaughlin finished second in 52.88, just 0.13 shy of her personal best, with Spencer third in 53.11, equaling her best.
