Red Sox promote top prospect Marcelo Mayer to Double-A Portland
MLB Draft First Round: Red Sox Take Marcelo Mayer
Marcelo Mayer already crown jewel of Red Sox farm system, Sports
Red Sox prospect Marcelo Mayer posts first multi-homer game of professional career - The Boston Globe
MLB Draft 2021: Red Sox select prep shortstop Marcelo Mayer with No. 4 pick
First card of highly touted first round draft pick for the Boston Red Sox!
Marcelo Mayer 2021 Bowman Draft First 1st BD-174 RED SOX QTY. AVAIL
Boston Red Sox select 'superstar' shortstop in 2021 MLB Draft
Marcelo Mayer Discusses His Progression Through Minor Leagues
Shortstop Marcelo Mayer makes debut at Hadlock Field in 6-2 Sea Dogs win
Red Sox shoot up to fifth in new Baseball America farm system rankings – NBC Sports Boston
Boston Red Sox Top Fantasy Baseball Prospects 2023