Marcelo Mayer Goes 3-5 with 4 RBIs!, Boston Red Sox Prospect
Red Sox prospect Marcelo Mayer won't play again this season - The Boston Globe
Watch: Marcelo Mayer launches his first Double-A home run
Marcelo Mayer breaks out for Portland
Red Sox promote top prospect Marcelo Mayer to High A Greenville - The Boston Globe
Marcelo Mayer's coach compares Pirates' potential top draft pick to another former No. 1 from the same high school
Red Sox shut down top prospect Marcelo Mayer due to shoulder injury – NBC Sports Boston
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Red Sox Prospect Marcelo Mayer Has a Simple Approach and a High Ceiling
Eastlake's Marcelo Mayer: The Six Million Dollar Man
May Farm Report: Red Sox promote Shane Drohan, Marcelo Mayer