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Diaz coach Richard Perez claims Conor McGregor took "substance" to help with stamina, mass gains | BJPenn.com
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EXCLUSIVE | Nate Diaz's boxing coach Richard Perez gives his take on why Nate won rematch against Conor McGregor | BJPenn.com
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UFC 244: Nate Diaz's Coach Richard Perez Was "Upset" Over "Crazy USADA Controvery Ahead of Jorge Masvidal Fight: MMA
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Conor McGregor vs. Nate Diaz 2: Coach Richard Perez Alleges PED Use by Notorious | Bleacher Report | Latest News, Videos and Highlights
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