WASHINGTON, D.C. — Boxer and Showtime boxing commentator Paulie Malignaggi spoke to MMA Fighting on Tuesday at the Cleveland Clinic brain study presser about performance-enhancing drug (PED) use, why weight class jumping is often a sign of PED use, his thoughts on Conor McGregor vs. Nate Diaz and much more.

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http://www.mmafighting.com/2016/4/30/11545762/paulie-malignaggi-if-boxing-had-usada-testing-weight-class-jumping