Red Sox No. 1 Prospect Marcelo Mayer Promoted to Portland
Pipeline Podcast: Revisiting the 2021 Draft with Red Sox Marcelo Mayer
Red Sox promote top prospect Marcelo Mayer to Double-A Portland
Marcelo Mayer Class of 2021 - Player Profile
Marcelo Mayer continues climb in MLB's Top 100 prospect rankings
Red Sox Prospect Outlook: Marcelo Mayer Destined For Stardom?
Marcelo Mayer Stats, Fantasy & News
2021 MLB Draft Stock Watch: Which Demographics Are Riskiest At No. 1 Overall? — College Baseball, MLB Draft, Prospects - Baseball America
MLB 21 The Show CAP – SS Marcelo Mayer – Sports Gaming Rosters
Top Red Sox prospect Marcelo Mayer promoted to Double A after blistering May - The Athletic
Marcelo Mayer Headed for 2021 MLB Draft - ITG Next
Red Sox prospect Marcelo Mayer out for rest of 2023