From undefeated prospect to world champion amidst a growing doping investigation
In short: Jaime Munguía has climbed the ranks of professional boxing through sheer dominance and strategic weight shifts. However, his recent ascent to the WBA super middleweight title has been shadowed by a significant controversy involving positive tests for performance-enhancing drugs.
The Mexican professional boxer, born on 6 October 1996, began his professional career in 2013. He initially built a formidable reputation by compiling a 28–0 record before capturing the WBO junior middleweight title on 12 May 2018 by defeating American Sadam Ali. His early career was marked by high-profile victories, including a unanimous decision over former champion Liam Smith in July 2018 and a technical knockout against Brandon Cook in September 2018.
Munguía’s career is defined by his ability to navigate multiple weight classes. After vacating his WBO light middleweight title to move up to middleweight, he secured a victory against Gary O'Sullivan on 11 January 2020. He later faced Canelo Álvarez in May 2024, suffering his first career knockdown in the fourth round before losing by unanimous decision. Despite this setback, he continued to compete, securing a TKO victory against Erik Bazinyan in September 2024.
The trajectory of Munguía's career has recently been complicated by legal and regulatory scrutiny. Following a unanimous decision victory over Bruno Surace on 4 May 2025, Munguía tested positive for performance-enhancing drugs in both his initial and b-samples. While he went on to win the WBA super middleweight title against Armando Reséndiz on 2 May 2026, an investigation into his drug use remains ongoing as of late 2025.
His resilience is evident in his ability to maintain high rankings, such as being ranked number one by the WBC and WBO during his ascent. However, the duality of his recent success—winning a major world title while facing disciplinary investigation—highlights the complex pressures and controversies inherent in elite-level combat sports.
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