Jamaican discus thrower Traves Smikle reveals positive drug test

• Olympian insists he did not knowingly take a banned substance• Smikle is fourth Jamaican to be named in past week The Olympic discus thrower Traves Smikle has become the fourth Jamaican athlete to reveal a positive doping test but said he did not knowingly ingest a banned substance. Smikle said the Jamaica Anti-Doping Commission (JADCO) notified him that his urine sample from the Jamaica National Trials in June returned an adverse analytical finding. He did not identify the substance for w...