American Sydney McLaughlin-Levrone has smashed her own 400m hurdles world record and destroyed Dutch rival Femke Bol to win Olympic gold in spectacular style in Paris.
McLaughlin-Levrone controlled the race from the gun and then accelerated away in the final straight on Thursday night to successfully defend her title.
The winning time of 50.37 seconds eclipsed McLaughlin-Levrone's previous world mark of 50.65 set at the US Olympic trials in June.