Great Britain's Eilidh Doyle has finished in eighth place in the women's 400m hurdles final.
Doyle was drawn in lane one after only progressing as a fastest loser and she struggled to keep pace with her rivals.
The 29-year-old was always towards the back of the field as USA's Dalilah Muhammad led from start to finish to claim gold in a time of 53.13s.
Denmark's Sara Slott Petersen won silver as she finished 0.42 seconds behind Muhammad, while USA's Ashley Spencer earned bronze.
