BOSTON RED SOX- MARCELO MAYER AUTOGRAPH MAJOR LEAGUE BASEBALL BECKETT BC85206
Marcelo Mayer already crown jewel of Red Sox farm system, Sports
Red Sox top prospect Mayer promoted to Double A Portland
Boston Red Sox Top Prospects: FCL Season Review - Over the Monster
Six Things To Know About Red Sox First-Round Draftee Marcelo Mayer
2021 Leaf Draft #41 Marcelo Mayer XRC RC Rookie RC Rookie Baseball Trading Card : Collectibles & Fine Art
2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer, Local Sports
MLB Draft 2021: Boston Red Sox take Marcelo Mayer with fourth overall pick - Over the Monster
San Diegans Marcelo Mayer, Spencer Jones focus on the present as they head to MLB Futures Games - The San Diego Union-Tribune