Keith Law's AL East draft recap: Yankees, Red Sox (Marcelo Mayer!), Orioles, Blue Jays and Rays breakdowns - The Athletic
MLB Draft 2021: Marcelo Mayer and Five Other Prospects to Watch - The New York Times
Red Sox top prospect Marcelo Mayer embracing stop with Sea Dogs
Red Sox Prospect Outlook: Marcelo Mayer Destined For Stardom?
2021 MLB Mock Draft: Final Edition, by Alex Giobbi, Minor League Madhouse
2021 MLB draft profile: The Tigers are consistently linked to prep RHP Jackson Jobe - Bless You Boys
How Marcelo Mayer became a scouting impossible dream come true - The Boston Globe
The Pitchers Who Know How Kumar Rocker Feels - The New York Times
Top Red Sox prospect Marcelo Mayer is tearing up the minors and drawing rave reviews - The Boston Globe
Pipeline Inbox comparing Top 3 Draft prospects to previous picks
MLB Draft 2021: Marcelo Mayer and Five Other Prospects to Watch - The New York Times