He boxed with a special permit from prison, suffered a hard knockout, and the referee's decision generated controversy.

Mauro Herrera, a boxer known as "El Titán" who fought under a special prison permit, was defeated by José Centurión in a bout held on Friday, September 11, at the Microestadio Delmi in Salta, Argentina.

The fight concluded after Herrera suffered a severe knockout. Despite the knockout finish mentioned in the coverage, the official result was recorded as a defeat by points, and the refereeing decision has sparked controversy.