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2021 MLB Draft: Red Sox first-round pick Marcelo Mayer quickly ditches Yankees allegiance
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Red Sox prospect Marcelo Mayer posts first multi-homer game of professional career - The Boston Globe
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Marcelo Mayer Rookie 1st Bowman 2021 Bowman Chrome #BDC-174, Red Sox –
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Red Sox top prospect Marcelo Mayer on fire for High-A Greenville – NBC Sports Boston
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Mayer, Yoshida headline 5 Red Sox prospects on BA's top 100 list
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Tom Caron Sits Down With Red Sox First-Round Draft Pick Marcelo Mayer
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As Red Sox land four players on top-100 prospect list, a look at who could join them soon - The Athletic
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Red Sox's Top Prospect Marcelo Mayer Promoted To High-A Greenville
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Last year thr Red Sox selected Marcelo Mayer with the No. 4 overall se, MLB Draft