Red Sox prospect Marcelo Mayer collects first multihomer game
Marcelo Mayer's HUGE 3-Hit Game!, Boston Red Sox Prospect
Red Sox prospect Marcelo Mayer posts first multi-homer game of professional career - The Boston Globe
Red Sox top prospect Marcelo Mayer is 'eager to take his game to the next level' – Blogging the Red Sox
Portland Sea Dogs McClelland Miscellanea
Marcelo Mayer of Eastlake High taken fourth in MLB Draft - The San Diego Union-Tribune
Red Sox top prospect Marcelo Mayer homers in back to back games in Portland, Bangor Local Sports
Red Sox Prospect Report: Marcelo Mayer Showing More Power
Mr. Baseball 2021: Marcelo Mayer