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Marcelo Mayer already crown jewel of Red Sox farm system, Sports
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Marcelo Mayer crushes a pair of homers
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Four Red Sox minor-leaguers among Baseball America's Top 100 prospects rankings - The Boston Globe
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Red Sox' Marcelo Mayer vaults into top five on MLB's Top 100 Prospects list – NBC Sports Boston
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Let's Watch Some Shortstop Prospects Play Defense
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Red Sox Top Prospects
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The Complete Prospects Compendium (Part 1), by Tieran Alexander
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Red Sox Affiliate
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Top 50 MLB prospects: Jim Bowden ranks the game's best in tiers, from future MVPs to everyday guys - The Athletic
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National League defeats American League in annual Futures Game
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2021 MLB Draft - Top 500 Prospects — Prospects Live
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Marcelo Mayer Archives