Marcelo Mayer of Eastlake High taken fourth in MLB Draft - The San Diego Union-Tribune
Red Sox sign No. 4 MLB Draft pick Marcelo Mayer as shortstop reportedly gets $6.6 million bonus
Red Sox prospect Marcelo Mayer posts first multi-homer game of professional career - The Boston Globe
Red Sox prospect Marcelo Mayer off to impressive start for Greenville Drive
Boston Red Sox To Send Three Top Prospects, Including Marcelo Mayer, to All-Star Futures Game - Fastball
Red Sox Prospect Outlook: Marcelo Mayer Destined For Stardom?
2021 MLB Draft: Red Sox first-round pick Marcelo Mayer quickly ditches Yankees allegiance
Marcelo Mayer already crown jewel of Red Sox farm system, Sports
Red Sox Notes: Marcelo Mayer to make his Portland Sea Dogs debut, former teammate speaks about his leadership, more system promotions
Red Sox top prospect Marcelo Mayer on fire for High-A Greenville – NBC Sports Boston
Jackson Holliday, Marcelo Mayer Highlight All-Star Futures Game Rosters
Red Sox promote top prospect Marcelo Mayer to Portland Sea Dogs
MLB Draft 2021: Red Sox select prep shortstop Marcelo Mayer with No. 4 pick
What to know about Marcelo Mayer, the Red Sox' first-round draft pick - The Boston Globe
Red Sox' Marcelo Mayer vaults into top five on MLB's Top 100 Prospects list – NBC Sports Boston