Angel Guillermo "Memo" Heredia provided track athletes like Marion Jones and Justin Gatlin with steroids and human growth hormone, only to escape prosecution in the BALCO case by agreeing to testify for the prosecution. He hotly denies using anything with Marquez, claiming his fighter has bulked up only because of an unorthodox strength and conditioning program he designed for him.
Pacquiao's trainer, Freddie Roach, said Marquez didn't look like a fighter who had naturally grown, prompting a threat of a lawsuit by Heredia and denials by Marquez himself.
"You can say anything you want but you have no proof," Marquez said. "Let's go together and I'll do any test you want."
Pacquiao, who himself was the target of suggestions by Mayweather's camp that he used something to grow, said he wasn't worried about it.
"Let's give him credit for hard work," Pacquiao said. "It's not about size, it's about how you function in the ring. I've been fighting bigger guys all my life."
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