A look a how age affects the defensive abilities of infielders, broken down by position and componen skills - range, error rate, and turning double plays.
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New York Yankees' Derek Jeter, left, tags out Tampa bay Rays runner Gabe Kapler at third base during the third inning of a baseball game Wednesday, April 15, 2009 in St. Petersburg, Fla. Kapler tried to advance to third on an infield ground out by teammate Michel Hernandez. (AP Photo/Chris O'Meara)