Red Sox minor-league notes: Marcelo Mayer injury update, Brainer Bonaci promotion - The Athletic
Baseball America Prospect Report—September 15, 2021 — College Baseball, MLB Draft, Prospects - Baseball America
Red Sox top prospect Marcelo Mayer on fire for High-A Greenville
Minor Lines 5/31/23: Marcelo Mayer Not So Good In Portland Debut - Over the Monster
SoxProspects News: Cup of Coffee: Mieses belts two homers, Mayer hits first long ball
Triston Casas, Marcelo Mayer lead Boston Red Sox 2022 top 15 prospect list; Nick Yorke ranks No. 3
Red Sox Notes: Marcelo Mayer to make his Portland Sea Dogs debut, former teammate speaks about his leadership, more system promotions
Red Sox Top prospect Marcelo Mayer may get called-up to Boston
Red Sox notebook: Tommy Pham at leadoff, Matt Barnes returns, Marcelo Mayer promoted - The Athletic
The Red Sox Prospects Report - Part Two - Over the Monster
Marcelo Mayer, Red Sox top prospect, is tearing up the minor leagues