Tyson Gay's sponsorship deal with Adidas suspended after positive out-of-competition dope test "We are shocked by these recent allegations, and even if we presume his innocence until proven otherwise, our contract with Tyson is currently suspended," an Adidas spokesman said. I don't have a sabotage story. I don't have lies ... I basically put my trust in someone and I was let down," the American said, adding that he had never knowingly taken a performance-enhancing drug. Powell and Simpson, both from Jamaica, have denied knowingly taking a banned substance. The doping cases are a blow to the image of athletics a month ahead of the world championships in Moscow. The sport often struggles to maintain a high profile outside Olympic years. German company Puma SE, which sponsors Jamaican athletics through a contract with the national association there, declined to comment because it does not have individul contracts with any of the athletes involved. Puma does sponsor Olympic sprint champion Usain Bolt, whose manager said he was not involved in the latest doping scandal. Chinese sporting goods company Li Ning, which sponsors Powell, was not immediately available for comment.