American super lightweight boxer Ryan Garcia has denied taking a banned performance-enhancing substance before his victory over WBC world champion Devin Haney in New York last month. ESPN, citing a leaked letter from the Voluntary Anti-Doping Association (VADA), reported on Wednesday that Garcia had tested positive for ostarine on the day before and day of the fight. Garcia addressed the report in a video posted on X. “Everybody knows that I don’t cheat,” the 25-year-old said. “Never taken a steroid. … I don’t even know where to get steroids at the end of the day, I barely take supplements. Big lies …” Garcia floored Haney three times on the way to a majority decision at Brooklyn’s Barclays Center to hand his rival the first defeat of his professional career. He missed weight so was unable to claim the title. Ostarine is a selective androgen receptor modulator which produces similar results to anabolic steroids, allowing athletes to increase muscle mass, stamina and fitness. It is banned by the World Anti-Doping Agency (WADA). VADA, an independent agency based in Las Vegas that runs testing mostly for boxing and mixed martial arts, did not immediately respond to a request for comment.