Leading sprinter Kelly-Ann Baptiste withdrawn from world championships .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 . ( CNN ) -- The IAAF has been under fire in recent months over its handling of the Russian doping scandal, with several athletes being banned or stripped after testing positive for performance-enhancing drugs.
Leading sprinter Kelly-Ann Baptiste withdrawn from world championships .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 . The IAAF has been under fire in recent months over its handling of the Russian doping scandal, with several athletes being banned or stripped after testing positive for performance-enhancing drugs.