Team GB's Perri Shakes-Drayton has lost her place in the final of the women's 400m hurdles on Wednesday night.
The 23-year-old had qualified from the semi-final earlier today as a fastest loser after Denisa Rosolova had been disqualified.
However, upon appeal, the 25-year-old has been reinstated to the race, thus knocking Shakes-Drayton out.
Shakes-Drayton is expected to feature in the 4x400m relay later this week.
