When Jaime Munguia stepped into the ring in May, the goal was simple-avenge his loss to Bruno Surace. He did just that, dominating the rematch and walking away with a decisive victory. For a brief moment, it looked like the 28-year-old Mexican star was back on track.
Then came the shock. VADA announced that both Munguia’s A and B samples tested positive for banned substances. The headlines shifted overnight, from celebration to suspicion. His win hung in the balance, his reputation was in jeopardy, and his trainer Eddy Reynoso-best known for his work with Canelo Alvarez-was once again pulled into a familiar cloud of PED controversy.
For weeks, Munguia’s name was tied more to lab reports than boxing. But now, the cloud has lifted.
Cleared After Full Investigation
UK Anti-Doping (UKAD), the British Boxing Board of Control, and the WBC have all confirmed that Munguia’s positive test was the result of accidental contamination with pregnenolone, a legal substance not banned under anti-doping rules. The official word: this was a false positive, not an intentional act of cheating.
That means Munguia’s win over Surace stands. There will be no ban, no overturned result, and no official sanction. “The WBC protocol investigation determined that Jaime Munguia is not guilty,” said WBC President Mauricio Sulaiman.
Munguia quickly went public with relief. On Instagram he wrote, “The science proves it-I did not cheat. I am grateful to the WBC, BBBofC, and UKAD for acknowledging this truth… I look forward to returning to the ring soon.”
Jaime Munguia: “I’ve Always Been Clean”
Speaking with Fight Hub TV, Munguia doubled down: “I have been a clean person, a clean athlete. The supplements that came out contaminated, it is not an illegal substance, it is not something that improves my physical performance.”
He also defended his trainer Reynoso, who faced heavy criticism throughout the ordeal. “Eddy isn’t responsible for anything that I take… Eddy Reynoso has nothing to do with this. Thank you to Eddy Reynoso and the Canelo team for your support.”
The dismissal clears the way for Munguia to re-enter boxing’s crowded middleweight and super middleweight pictures. There’s talk of him returning before the end of the year, possibly on a Saudi Arabia fight card in late November. Opponents haven’t been confirmed, but a third fight with Surace, or even a showdown with names like Jermall Charlo or Caleb Plant, could be in play.
For now, what matters most is that Munguia has his name back. The positive test won’t define him, and the win that reignited his career remains on the record.
The question is less about science now and more about perception: can Jaime Munguia rebuild trust with fans, critics, and the sport itself?
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