Boston Red Sox Top Prospect Voting: Marcelo Mayer is the next big thing - Over the Monster
Marcelo Mayer identified by MLB Pipeline as Red Sox' best defensive prospect – Blogging the Red Sox
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Red Sox prospect cracks Baseball America's 2023 Top 10
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Marcelo Mayer wasn't supposed to be there for the Red Sox at No. 4, but the MLB Draft had other plans - The Boston Globe
Marcelo Mayer, No. 4 Draft pick, signs with Red Sox
Marcelo Mayer (SS), Top Prospects for the Boston Red Sox Has Just Been Promoted From High A to Double A : r/baseball
The Boston Red Sox select Marcelo Mayer with the 4th overall pick in the 2021 MLB Draft - MLB Daily Dish
Boston Red Sox Top Prospect Voting: Marcelo Mayer is the next big thing - Over the Monster
2023 MLB Draft: The Top 614 Prospects - Future Stars Series