Ryan Garcia denied using performance-enhancing drugs in a video posted on social media Wednesday night after ESPN reported that he had tested positive for a banned substance.

Garcia defeated Devin Haney, a former amateur rival, by majority decision on April 20 in New York.

Garcia knocked Haney down three times and handed the WBC super lightweight champion his first loss but did not win the title because he was over the weight limit.

"Everybody knows that I don’t cheat," Garcia said in a video posted on X. "Never taken a steroid … I don’t even know where to get steroids. … I barely take supplements. Big lies."

On April 20, just before his surprising victory over Haney, Garcia, the boxer known for stirring up controversy, received news that he had tested positive for the performance-enhancing substance ostarine.

The Voluntary Anti-Doping Association confirmed this in a letter obtained by ESPN. This revelation was initially disclosed by journalist Dan Rafael, who further revealed that Garcia's pre-fight sample showed traces of 19-norandrosterone.

The letter indicates that urine samples were collected before the fight, but the results were not revealed until afterwards.

Golden Boy Promotions, led by Oscar De La Hoya, released a statement asserting their belief that Garcia did not intentionally consume any prohibited substances.

In a statement provided to ESPN, Haney said, "It’s unfortunate Ryan cheated and disrespected both the fans and the sport of boxing by fighting dirty and breaking positive not once, but twice."

Garcia weighed in 3.2 pounds over the pair’s agreed-upon limit before knocking Haney down three times in the bout and winning by majority decision as a major underdog.

"Ryan owes the fans an apology, and by his recent tweet he still thinks this is a joke," Haney told ESPN. "We put our lives on the line to entertain people for a living. You don’t play boxing. … This puts the fight in a completely different light."

Unless Ryan Garcia's B-sample, which serves to validate or refute the findings of the initial sample, returns negative, the outcome of the bout could be overturned.

Garcia has a window of 10 days to request testing of the B-sample. While Garcia's victory boosted his record to 25-1, it is likely to be nullified if the test results confirm the presence of banned substances.