Munguia’s B-sample also comes back positive for a banned substance, he faces disciplinary actions

Former super-welterweight champion Jaime Munguia (45-2, 35 KOs) could face disciplinary action, after his B-sample came back positive for a banned substance following his May 3 unanimous decision victory over Bruno Surace (26-1-2) in the rematch.

Munguia’s victory could be overturned to a no-contested and he might face from 6 months to one year suspension.

Munguia’s team maintained his innocence in a statement Tuesday, which confirmed his test returned positive for exogenous testosterone metabolites.

“We want to reiterate that this outcome does not change our position: Jaime did not knowingly or intentionally ingest any banned substance,” the team said in its statement. “We remain steadfast in the belief that this result was caused by contamination, and we are continuing to take every possible step to identify the source.

“Jaime remains unwavering in his commitment to clean competition, and we will continue to work closely with experts and relevant authorities to reach full clarity.”
After the initial positive test, Munguia said the findings were complete surprise and he requested that his B-sample be tested.

Now that B-sample also came back positive, Munguia will await disciplinary action from the British Bord of Control (BBBofC) which was commission in the event in Saudi Arabia on May 3.