2021 MLB Mock Draft 3.0 — Prospects Live
How Red Sox prospect Marcelo Mayer made it to All-Star Futures Game
Marcelo Mayer is rising in ESPN's rankings of top MLB prospects
Red Sox draft top shortstop prospect Marcelo Mayer at No. 4
Red Sox prospect Marcelo Mayer's custom cleats at Futures Game - ESPN
Red Sox Prospect Marcelo Mayer Tapped For All-Star Futures Game
Marcelo Mayer, Red Sox top prospect, on goals for 2023
Top Red Sox prospect Marcelo Mayer promoted to Double A after blistering May - The Athletic
Marcelo Mayer, Masataka Yoshida headline 5 Red Sox prospects on Baseball America's Top 100 list
Marcelo Mayer among five Red Sox prospects on Baseball America top 100 - Over the Monster
Red Sox' Marcelo Mayer vaults into top five on MLB's Top 100 Prospects list – NBC Sports Boston
MLB: Red Sox Catching Situation for 2023 and Beyond, by Jake T. O'Donnell