Team GB's Andy Turner exited the men's 110m hurdles at the semi-final stage this evening.
The 2011 World Championship bronze medallist got out of the blocks well and looked to be in contention with two barriers cleared.
However, he began to slip down the field as the race progressed and he ended up finishing in fourth place.
Aries Merritt of the United States won the race in a time of 12.94s, while Ryan Brathwaite took the second automatic qualifying slot.
