Red Sox promote top prospect Marcelo Mayer to High A Greenville
Marcelo Mayer is not the only Sox prospect thriving in Portland
Red Sox Notes: Marcelo Mayer to make his Portland Sea Dogs debut, former teammate speaks about his leadership, more system promotions
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Boston Red Sox Top Prospects to watch in '22 - Over the Monster
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SoxProspects News: Notes from the Field: Marcelo Mayer, Blaze Jordan, Niko Kavadas and Nathan Hickey
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Boston Red Sox Top Prospect Voting: Marcelo Mayer is the next big thing - Over the Monster
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