Leading sprinter Hackett withdrawn from world championships .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 .
Leading sprinter Kelly-Ann Baptiste withdrawn from world championships . Her Trinidad and Tobogo federation said it was for a 'doping matter ' Teammate Semoy Hackett also pulled out of Moscow events . Latest leading track and field athlete to fail drugs test .