Mayer, Yoshida headline 5 Red Sox prospects on BA's top 100 list
Top 10 Most Valuable: 2021 Bowman Draft Baseball – Sports Card Investor
2021 MLB Draft Stock Watch: Which Demographics Are Riskiest At No. 1 Overall? — College Baseball, MLB Draft, Prospects - Baseball America
Red Sox prospect Marcelo Mayer out for rest of 2023
MLB Draft 2021: Marcelo Mayer and Five Other Prospects to Watch - The New York Times
2021 MLB Draft profile: SS Marcelo Mayer is the Tigers' top target - Bless You Boys
Favorite picks from 2021 MLB Draft
2021 MLB Draft: Red Sox first-round pick Marcelo Mayer quickly ditches Yankees allegiance
MLB Draft 2021: A scouting report on Boston Red Sox pick Marcelo Mayer - Over the Monster
Meet Marcelo Mayer, Eastlake grad and MLB prospect with 'more pop' than Adrián González
Top tools in 2021 MLB Draft
2021 Bowman Draft #BD-174 Marcelo Mayer RC Rookie Boston Red Sox MLB Baseball Trading Card : Collectibles & Fine Art
Two years after being drafted, Marcelo Mayer remains on fast track to Red Sox stardom