J.D. Martinez on his hitting mentality

J.D. Martinez and the art and science of the swing

JD Martinez Thought Process During At-Bat - Baseball Hitting Tips

J.D. Martinez situation highlights Red Sox' muddied future at designated hitter – NBC Sports Boston

How a failed college baseball player turned the MLB into a hit machine

Watch: J.D. Martinez hits first home run in Red Sox uniform

Dodgers win in 12th on bases-loaded walk against Twins

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Swing Kings: The Inside Story of Baseball's Home Run Revolution: Diamond, Jared: 9780062872104: : Books