US sprinter Tyson Gay says he will pull out of next months's athletics World Championships after testing positive for a banned substance, according to the Associated Press.
The former 100m and 200m world champion reportedly said: "I don't have a sabotage story. I basically put my trust in someone and was let down."
Gay has run the fastest time in the world this year, clocking 9.75 seconds at the US World Championships trials last month.
As Tour de France leader Froome can attest, the shadow of a drug scandal can linger for years. Athletics must act to avoid this cancer.
Paul Boyle, manager of Asafa Powell and Sherone Simpson, has confirmed that both have left Italy. They are in the air now.
Adidas AG has suspended its contract with Tyson Gay after the former double world sprint champion failed an out-of-competition dope test.