According to a report by RingTV, one Juan Manuel Marquez’s preparation team members, Angel Heredia, was previously charged and found guilty of dealing illegal performance enhancing drugs to athletes. Heredia himself testified in a courthouse in San Francisco, and gave away the names of those who used his services.
Marquez is fully aware of this fact, and knows the troubled history of his teammate. Nonetheless, he trusts in Heredia and is convinced that his advice for the Pacquiao preparation will be very beneficial.
After finding out that Marquez was working with Heredia, Mayweather's assistant Leonard Ellerbe spoke out right away:
“All that I will say is that this is just another example of why Floyd Mayweather has taken the stand that he has taken on the notion of random blood and urine testing. I mean, this is exactly why. Any opponent that Floyd faces in the ring must, like Floyd himself, be subjected to random drug testing of their blood and urine.”
I feel that despite the fact that there is absolutely no reason to think that Marquez would even partake in the use of PEDs, Ellerbe’s statement makes much sense. I agree wholeheartedly with Floyd’s way of protecting himself as well as the sport.