Manny Pacquiao vs. Juan Manuel Marquez 4

Marquez: 'I told them I'll take any drug test'

Juan Manuel Marquez and conditioning coach Memo Heredia deny using any performance-enhancing drugs, and the fighter says he'd be happy to take any drug tests, provided Manny Pacquiao takes the same.

Video

Guerrero: 'Marquez always puts it on Pacquiao'

Robert Guerrero discusses Pacquiao-Marquez IV, plus the his would've-been fight with Timothy Bradley, which fell apart in the negotiation stages.

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