US star Sydney McLaughlin smashes own world record in 400 hurdles track and field world championships

For the third time in a calendar year, reigning Olympic gold medalist 

Sydney McLaughlin obliterated her own world record in the 400-meter hurdles

this time en route to her first career world championship.

The 22-year-old's time of 50.68 seconds Friday at Hayward Field in Eugene

Oregon, shaved almost a full second off her previous record of 51.41 set last month on the same track

a U.S. outdoor nationals. And it gives her seven of the 11 fastest times ever recorded in the event.

Femke Bol of the Netherlands finished in second place, roughly 1.5 seconds behind McLaughlin

and reigning champion Dalilah Muhammad of the U.S. took bronze.