Sports Medicine with the Cubs’ Mark O’Neal

The gang asks Cubs’ director of medical administration Mark O’Neal about the differences in strains, development, and nutrition for rookie players.

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Chicago Cubs head trainer Mark O’Neal escorts Chicago Cubs second baseman Darwin Barney off the field after he was hit by a pitch to his head during the eighth inning of their game at Wrigley Field, in Chicago, on Tuesday, July 31, 2012. (Nuccio DiNuzzo/ Chicago Tribune)

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