Marcelo Mayer Headed for 2021 MLB Draft - ITG Next
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MLB Draft 2021: Marcelo Mayer and Five Other Prospects to Watch - The New York Times
MLB Draft 2021: Marcelo Mayer and Five Other Prospects to Watch - The New York Times
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Boston Red Sox select Marcelo Mayer from Eastlake HS with the 4th pick of the 2021 MLB Draft
Marcelo Mayer ready for next step at Red Sox camp
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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 ready for next step at Red Sox camp