Where Red Sox prospects rank in recent top prospect lists
Marcelo Mayer already crown jewel of Red Sox farm system, Sports
2021 Leaf Draft #41 Marcelo Mayer RC Rookie Card XRC Draft/Prospect Baseball Card in Raw (NM or Better) Condition : Collectibles & Fine Art
2021 mlb draft – Blogging the Red Sox
MLB Draft 2021: See Who Tampa Bay Rays Picks
Sea Dogs prospect Mayer, 20, focused on pitch selection -- and lobster rolls, Fisher Cats
2021 MLB Mock Draft: Breaking Down Top Prospects and Predictions, News, Scores, Highlights, Stats, and Rumors
The Boston Red Sox select Marcelo Mayer with the 4th overall pick in the 2021 MLB Draft - MLB Daily Dish
Four Red Sox minor-leaguers among Baseball America's Top 100 prospects rankings - The Boston Globe
Marcelo Mayer - Wikipedia
Red Sox adjust on the fly, take a potential franchise talent in Marcelo Mayer – NBC Sports Boston
The Road to The Show™: Boston Red Sox shortstop Marcelo Mayer
What we learned about the Pirates' future after the 2021 MLB Draft - Bucs Dugout
Mock MLB Draft 2021 June 9