Marcelo Mayer Discusses His Progression Through Minor Leagues
Boston Red Sox prospect watch: Marcelo Mayer erupts : r/redsox
Revisiting The 2021 Draft and its Top Prospects, by Mason McRae
SoxProspects News: Minor Notes: Casas crushes first MLB homer, Hamilton sets record in Portland
MLB Draft 2021: Marcelo Mayer is a potential pick for the Boston Red Sox - Over the Monster
Marcelo Mayer is killing it in the minors! : r/redsox
Was Marcelo Mayer Reason For Red Sox Not Re-Signing Xander Bogaerts? Welcome, Masataka Yoshida!
The Red Sox are not a great team. But the pieces are starting to fall into place, starting with Brayan Bello. - The Boston Globe
Red Sox Minor Lines 5/15: Marcelo Mayer Goes Deep Again - Over the Monster
Red Sox minor league prospects: Position-by-position review entering second half
Marcelo Mayer, Red Sox top prospect, is tearing up the minor leagues
Marcelo Mayer is killing it in the minors! : r/redsox