Only two-time Olympic champion Shelly-Ann Fraser-Pryce of Jamaica , who went on to claim the gold , and Leading sprinter Kelly - Ann Baptiste withdrew from the championships . Her Trinidad and Tobogo federation said it was for a ' doping matter ' Teammate Semoy Hackett also pulled out of international events . Latest leading track and field athlete to fail drug test .
Leading sprinter Kelly - Ann Baptiste withdrew from the championships . Her Trinidad and Tobogo federation said it was for a ' doping matter ' Teammate Semoy Hackett also pulled out of international events . Latest leading track and field athlete to fail drug test .