Against the Yankees, prospect Marcelo Mayer offers another glimpse at the future - The Athletic
Red Sox Top prospect Marcelo Mayer may get called-up to Boston
Top Red Sox prospect Marcelo Mayer shut down for rest of season – Blogging the Red Sox
Marcelo Mayer, the Red Sox' top prospect, already looks destined for the big leagues - The Boston Globe
Two years after being drafted, Marcelo Mayer remains on fast track to Red Sox stardom
Boston Red Sox view Marcelo Mayer as an 'impact shortstop' as he continues to grow; 'He moves with such loose, comfortable action'
The Red Sox Farm System of the Future is Here and it is Beautiful
Checking in with the Red Sox' top 10 prospects
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 on fire for High-A Greenville
The Hottest MLB Prospects to Watch in July
Marcelo Mayer: Breaking News, Rumors & Highlights
Boston Red Sox Insider Discusses Marcelo Mayer's Major League Timeline - Fastball
Boston Red Sox Top 30 Prospects For Dynasty - FantraxHQ