Marcelo Mayer is killing it in the minors! : r/redsox
Red Sox top prospect Marcelo Mayer is 'eager to take his game to the next level' – Blogging the Red Sox
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Marcelo Mayer - Wikipedia
Marcelo Mayer is killing it in the minors! : r/redsox
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Fenway dirt and a dream: Stadium Custom Kicks founder talks Marcelo Mayer's custom All-Star Futures cleats – Boston Herald
Boston Red Sox Prospects: Marcelo Mayer dominates opening weekend
Marcelo Mayer is killing it in the minors! : r/redsox