UKAD (United Kingdom Anti-Doping Agency) had issued a suspension to the deceased boxer but was forced to reverse the suspension.
Mexico’s Moises “Taz” Calleros (37-11-1, 20 KOs) collapsed from suspected cardiac arrest on March 1, and UKAD subsequently announced he was suspended after testing positive following his April 2023 bout against Galar Yafai at the O2 Arena in London.
Calleros was knocked down once and stopped in the fourth round by the talented Olympic gold medalist, but fought back with a first-round win in Mexico in December.
He tested positive for cocaine and UKAD initially released a statement on the matter..
“Mexican professional boxer Moises Calleros has been banned for four years from all World Anti-Doping Code-compliant sports for an anti-doping rule violation for the presence and use of a prohibited substance (ADRV),” it read.
“Mr. Calleros was tested by the UK Anti-Doping Agency (UKAD) following his match against Galar Yafai at the O2 Arena in London on 1 April 2023. Analysis of his sample revealed cocaine and its metabolite benzoylecgonine. Cocaine is prohibited for use in competition and is classified as a 'substance of abuse' on the World Anti-Doping Agency's prohibited list.”
“UKAD notified Mr Calleros of an ADRV for the presence and use of a prohibited substance and provisionally suspended him. The matter was then referred to an independent National Anti-Doping Committee (NADP) to determine whether an ADRV had been established and, if so, what appropriate sanctions would be imposed.
“The NADP concluded that Mr Calleros committed both ADRVs and imposed a four-year ban on the boxer from all sports governed by the World Anti-Doping Code. A shorter ban may be imposed on an athlete who can prove that the use or intake of cocaine occurred outside of competition and in a non-sport-related context, but Mr Calleros did not provide evidence to meet that requirement.”
“Mr. Calleros is entitled to a credit for the period during which he served his provisional suspension, and therefore his suspension will be deemed to have commenced on June 8, 2023 and to have ended at midnight on June 7, 2027.”
Former opponent Yafai responded to UKAD's post on X: “For those of you who don't already know, he passed away in March. Rest in peace.”
UKAD then released a further statement saying: “The UK Anti-Doping Agency (UKAD) has today received information regarding the death of Mexican professional boxer Moises Calleros.
“UKAD received this information shortly after publishing details of the outcome of the case regarding Mr Calleros, in accordance with UK Anti-Doping Rules.
“Unfortunately, UKAD had no information regarding Mr Cajeros' sad passing at the time of publishing and have now removed all details regarding this incident from their channels.”
