Marcelo Mayer is the biggest Red Sox prospect to hit Portland in a decade. Catch him while you can. – The Portland Phoenix
How Red Sox' Top 10 prospects fared in 2023
How did Red Sox top prospect Marcelo Mayer fare in first full pro season? – Blogging the Red Sox
How Red Sox prospect Marcelo Mayer made it to All-Star Futures Game
Could Marcelo Mayer be Red Sox' version of Phillies shortstop Bryson Stott
Red Sox Prospect Outlook: Marcelo Mayer Destined For Stardom?
Kiley McDaniel's midseason top 50 MLB prospects - ESPN
New Red Sox draft pick Mikey Romero is friends with Marcelo Mayer
Marcelo Mayer - Wikipedia
Marcelo Mayer among five Red Sox prospects on Baseball America top 100 - Over the Monster
Marcelo Mayer #1 Red Sox Prospect (2022 Highlights)