Marcelo Mayer already crown jewel of Red Sox farm system | Sports | eagletribune.com
Marcelo Mayer Headed for 2021 MLB Draft - ITG Next
Marcelo Mayer Takes To Instagram After Being Drafted By Red Sox
Boston Red Sox draft pick Marcelo Mayer 'super excited to share the middle of the field' with prospect Nick Yorke who he saw 'rake' in H.S. - masslive.com
Boston Red Sox Marcelo Mayer baseball card auction