Muhammad clocks fastest 400m hurdles prelim of first round
![Muhammad clocks fastest 400m hurdles prelim of first round](https://ktvz.b-cdn.net/2021/07/oly20_atw400h_heat5_hlf_210731-1440x810.jpg)
NBC Olympics
Defending Olympic and reigning world champion Dalilah Muhammad of the U.S. cruises to a heat-five victory in the women’s 400m hurdles first round at the Tokyo Olympics, finishing in 53.97 for the prelims’ fastest time.