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MARCELO MAYER/McDONOUGH 2021 BOWMAN CHROME DRAFT FRANCHISE FUTURES RED SOX #FF-4
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Red Sox No. 1 Prospect Marcelo Mayer Promoted to Portland
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Red Sox top prospect Marcelo Mayer out with right wrist soreness - The Boston Globe
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Marcelo Mayer #1 Red Sox Prospect (2022 Highlights)
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Marcelo Mayer
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2021 TOPPS BOWMAN DRAFT MARCELO MAYER CLASS OF 2021 ROOKIE AUTO #C21MM PSA 9
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MLB Draft 2021: A scouting report on Boston Red Sox pick Marcelo Mayer - Over the Monster
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Marcelo Mayer SS Scouting Report: 2021 MLB Draft • Prospects Worldwide
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Red Sox Prospect Outlook: Marcelo Mayer Destined For Stardom?
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Mr. Baseball 2021: Marcelo Mayer
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Curtain rises for Show at WWBA WC
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Boston Red Sox Insider Discusses Marcelo Mayer's Major League Timeline - Fastball
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Marcelo Mayer Class of 2021 - Player Profile