Sydney McLaughlin demolishes women’s 400m hurdles world record in a day of record heat
American athlete Sydney McLaughlin pulverized the women’s 400m hurdles world record at the US Olympic preliminaries on Sunday. The 21-year-old ran an amazing 51.90 seconds, crushing the past record by .26 seconds to become the first woman to run the 400m hurdles in less than 52 seconds. During the time spent winning, McLaughlin beat the…