Trinidad and Tobago athlete Deborah John was stretchered off the track after her head slammed to the track in a 100m hurdles crash at the world championships on Friday.
John, 27, lost her rhythm coming over the fourth of 10 hurdles, then completely left the ground a step before reaching the fifth hurdle.
She awkwardly fell through the hurdle, her head smacking on the London Olympic Stadium track.
Three people appearing to be medical professionals tended to her at that point before she was loaded onto a stretcher and taken off the track.
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