Joseph Diaz Jr. Demonstrates How to Throw a Real Punch | NBC Chicago
[REAL VERSION] London 2012

REAL VERSION

Full coverage on NBC through August 12

Joseph Diaz Jr. Demonstrates How to Throw a Real Punch

Joseph Diaz may be a featherweight, but he's a force to be reckoned with in the boxing ring. Representing the U.S. in boxing, "1st Look" host Ali Fedotowsky takes a look into what it takes to be an Olympic contender. Watch part one.

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