Jaime Munguia Tests Positive for Testosterone After May 4 Riyadh Win

Jaime Munguia, a former junior middleweight champion with a record of 45-2, tested positive for exogenous testosterone metabolites following his May 4 rematch victory over Bruno Surace in Riyadh, Saudi Arabia. Munguia, who had previously lost to Surace by knockout in December, expressed surprise at the positive test and stated his willingness to undergo retroactive, current, and future testing to prove his innocence. He has 10 days to request the testing of his B-sample, which will determine whether the victory is overturned to a no-contest and if he faces a suspension and fine. Surace, who lost by unanimous decision in the rematch, demanded the fight result be overturned immediately, criticizing the use of banned substances in boxing. Munguia's team has acknowledged the notification from the Voluntary Anti-Doping Association (VADA) and plans to respond accordingly, while his promoter has not yet commented. The positive test casts a shadow over Munguia's recent comeback and improvement, threatening to derail his career trajectory despite his previous clean record.