Sportswear manufacturer Adidas has suspended [its / this] sponsorship of U.S. sprinter Tyson Gay after the athlete failed a drugs test. Mr Gay, 30, is the [joint / jointly] second-fastest man ever [over / on top of] 100 metres and the fastest man in the world this year. He tested positive for a banned substance in [an / and] out-of-competition test on May 16. An Adidas spokesman said: "We are shocked by these recent [allegation / allegations] . Even if we [resume / presume] his innocence until [proven / proof] otherwise, our contract with Tyson is currently [suspension / suspended] ." The sportswear [giant / ogre] had been sponsoring Gay since 2005. It has the right to terminate the contract, “if the athlete is [found / been] guilty of the possession or use of drugs or any other prohibited substance”. Gay is [currently / present] waiting to hear the results of his B-test, [followed / following] the illegal stimulant being found in his [initial / letter] A-test. He told reporters on Monday that he did not [knowhow / knowingly] take part in any doping programme. He said: "I don't have a sabotage story. I basically put my trust [in / on] someone and was let down. I know [precision / exactly] what went on, but I can't discuss it [right / wrong] now." He said he was still optimistic about the future, saying: "I hope I am [able / capable] to run again, but I will take whatever punishment I get like a man." News of Gay's positive test emerged [early / shortly] after another sprinter, Jamaica's former 100m world record holder Asafa Powell, was also [reveled / revealed] to have failed a drugs test.