Marcelo Mayer, the Red Sox' top prospect, already looks destined for the big leagues - The Boston Globe
Top Red Sox prospect Marcelo Mayer collects four hits
Prospect Spotlight: Marcelo Mayer, SS, Boston Red Sox - The Dynasty Guru
Marcelo Mayer is killing it in the minors! : r/redsox
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 is 'eager to take his game to the next level' – Blogging the Red Sox
How Marcelo Mayer became a scouting impossible dream come true - The Boston Globe
First-round MLB draft pick has Nogales roots, Local Sports News
Teammates Marcelo Mayer, Brainer Bonaci headline All-Red Sox Minor League Team for July - The Athletic