Boston Red Sox Prospects: Marcelo Mayer dominates opening weekend
Boston Red Sox Promoting Top Prospect to Next Level - Fastball
Top Red Sox prospect Marcelo Mayer records first Double-A hits
Marcelo Mayer is the biggest Red Sox prospect to hit Portland in a decade. Catch him while you can. – The Portland Phoenix
Red Sox top prospect Marcelo Mayer promoted to Double A Portland after tearing it up throughout the month - The Boston Globe
Red Sox top prospect Marcelo Mayer promoted to Double A Portland after tearing it up throughout the month - The Boston Globe
Watch Red Sox prospect Marcelo Mayer record his first professional hit
Red Sox promote top prospect Marcelo Mayer to Portland Sea Dogs
Red Sox top prospect Marcelo Mayer promoted to Double A Portland after tearing it up throughout the month - The Boston Globe