Dos Santos breaks Warholm's world record in Zurich — 45.80 s in 400m hurdles

Four days after defeating Karsten Warholm at the Diamond League in Chorzów — where he posted the world's best time of the season, beating the Norwegian by 63 hundredths of a second — Brazil's Alison dos Santos went even faster in Zurich, clocking 45.80 seconds to break the 400m hurdles world record. Warholm had held the record for five years.