Leading sprinter Hackett withdrawn from world championships . She was subsequently exonerated by the Trinidad and Tobago federation , but the International Amateur Athletics Federation ( IAAF ) appealed the decision and re-suspended her pending an appeal before the Court of Arbitration for Sport in Switzerland . Her Moscow and the International Amateur Athletics Federation federation said it was for a 'doping matter ' ` In the case of Ms Baptiste this association was notified on also pulled out of Trinidad events . Latest leading track and field athlete to fail drugs test .
Leading sprinter Hackett withdrawn from world championships . Her Moscow and the International Amateur Athletics Federation federation said it was for a 'doping matter ' ` In the case of Ms Baptiste this association was notified on also pulled out of Trinidad events . Latest leading track and field athlete to fail drugs test .