Boston Red Sox Promoting Top Prospect to Next Level - Fastball
Top 50 MLB prospects: Jackson Holliday, Paul Skenes top Jim Bowden's rankings - The Athletic
Marcelo Mayer among three Red Sox prospects named to roster for All-Star Futures Game - The Boston Globe
Boston Red Sox Top Prospect Voting: Marcelo Mayer is the next big thing - Over the Monster
2023 MLB Draft: The Top 600 Prospects - Future Stars Series
Prospect Spotlight: Marcelo Mayer, SS, Boston Red Sox - The Dynasty Guru
Red Sox Rumors: Top Prospect Marcelo Mayer Promoted To Double-A
Sox Prospects
Red Sox promoting No. 1 prospect Marcelo Mayer to Double-A
Top 50 MLB prospects: Jackson Holliday, Paul Skenes top Jim Bowden's rankings - The Athletic
Sox Prospects
Red Sox top prospect Marcelo Mayer promoted to Double A Portland after tearing it up throughout the month - The Boston Globe
Top Red Sox prospect Marcelo Mayer promoted to Double A after blistering May - The Athletic
Marcelo Mayer among three Red Sox prospects named to roster for All-Star Futures Game - The Boston Globe