Red Sox Notes: Marcelo Mayer to make his Portland Sea Dogs debut, former teammate speaks about his leadership, more system promotions
Marcelo Mayer is the biggest Red Sox prospect to hit Portland in a decade. Catch him while you can. – The Portland Phoenix
Red Sox: Marcelo Mayer's prospect ranking shows he was the right draft choice
Red Sox No. 1 Prospect Marcelo Mayer Promoted to Portland
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marcelo mayer – Blogging the Red Sox
SoxProspects News: July 2021
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