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MLB Draft 2021: A scouting report on Boston Red Sox pick Marcelo
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MLB Draft 2021: Marcelo Mayer and Five Other Prospects to Watch
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2022 Bowman Platinum MARCELO MAYER Top Prospect Auto /50 PPF-3
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Preseason Baseball TOP 35 Teams
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Red Sox prospect guide: Marcelo Mayer
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Baseball Factory, Player Page
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Boston Red Sox select Marcelo Mayer from Eastlake HS with the 4th
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2021 Bowman Draft Baseball Hobby Jumbo Box
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MLB Draft 2021: Marcelo Mayer and Five Other Prospects to Watch