Marcelo Mayer's $6.664 million bonus leads San Diego area baseball signings - The San Diego Union-Tribune
Mr. Baseball 2021: Marcelo Mayer
Eastlake's Marcelo Mayer: The Six Million Dollar Man
paul toboni – Page 2 – Blogging the Red Sox
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paul toboni – Page 2 – Blogging the Red Sox
Boston Red Sox sign first round pick Marcelo Mayer to slot deal - Over the Monster
Marcelo Mayer drills third HR, 08/28/2022
Marcelo Mayer autographed card sells for $132,000
paul toboni – Page 2 – Blogging the Red Sox
Marcelo Mayer, the Red Sox' top prospect, already looks destined for the big leagues - The Boston Globe
paul toboni – Page 2 – Blogging the Red Sox
paul toboni – Page 2 – Blogging the Red Sox
paul toboni – Page 2 – Blogging the Red Sox
Marcelo Mayer, Boston Red Sox 2021 first-round pick, walks three times in professional debut in FCL