Boston Red Sox view Marcelo Mayer as an 'impact shortstop' as he continues to grow; 'He moves with such loose, comfortable action'
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Boston Red Sox Insider Discusses Marcelo Mayer's Major League Timeline - Fastball
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Red Sox draft 18 year old high school shortstop Marcelo Mayer with the 4th overall pick. Not Jack Leiter but this kid was protected to go…
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As Red Sox shut down Marcelo Mayer, rival prospects take off – NBC Sports Boston
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