Red Sox promote top prospect Marcelo Mayer to Double-A
Red Sox Prospect Outlook: Marcelo Mayer Destined For Stardom?
Marcelo Mayer wasn't supposed to be there for the Red Sox at No. 4, but the MLB Draft had other plans - The Boston Globe
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Red Sox promote top prospect Marcelo Mayer to Double-A Portland
Red Sox top prospect Marcelo Mayer is 'eager to take his game to the next level' – Blogging the Red Sox
Boston Red Sox promote prospect Marcelo Mayer to Double-A
Marcelo Mayer among three Red Sox prospects named to roster for All-Star Futures Game - The Boston Globe
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