Marcelo Mayer already crown jewel of Red Sox farm system, Sports
Marcelo Mayer drafted No. 4 by Red Sox in MLB Draft
Red Sox to promote top prospect Marcelo Mayer to Double-A Portland – Blogging the Red Sox
Boston Red Sox officially sign No. 4 overall pick Marcelo Mayer for $6.64M; shortstop took BP, did infield drills with big-league team Thursday
Top Red Sox pick Marcelo Mayer expected to make his pro debut Thursday - The Boston Globe
San Diegans Marcelo Mayer, Spencer Jones focus on the present as they head to MLB Futures Games - The San Diego Union-Tribune
Top Red Sox prospect Marcelo Mayer has been showing off at Double A. Now he'll get to do it on a bigger stage: the All-Star Futures Game. : r/redsox
Boston Red Sox select Marcelo Mayer from Eastlake HS with the 4th pick of the 2021 MLB Draft
2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer, Local Sports
Boston Red Sox select Marcelo Mayer from Eastlake HS with the 4th pick of the 2021 MLB Draft
Could Red Sox take exciting shortstop prospect Marcelo Mayer with No. 4 pick in 2021 MLB Draft? – Blogging the Red Sox
Boston Red Sox Top Fantasy Baseball Prospects 2023
Marcelo Mayer Wants To Become A Face Of Baseball, But Winning World Series With Red Sox Is His Primary Goal - CBS Boston
Boston Red Sox Insider Discusses Marcelo Mayer's Major League Timeline - Fastball
Boston Red Sox select Marcelo Mayer from Eastlake HS with the 4th pick of the 2021 MLB Draft