MLB Draft 2021: Marcelo Mayer and Five Other Prospects to Watch
Red Sox prospect Marcelo Mayer out for rest of 2023
Mayer, Yoshida headline 5 Red Sox prospects on BA's top 100 list
Triston Casas, Marcelo Mayer lead Boston Red Sox 2022 top 15
A closer look at the key questions surrounding the Red Sox' top 10
Boston Red Sox Top Prospects: Marcelo Mayer in the top 100 and
Hitting Prospect Heat Sheet: Marcelo Mayer is On Fire
2021 MLB mock draft 1.0: Kumar Rocker to Red Sox, Pirates go with
2021 MLB Draft Stock Watch For The Top 30 Prospects — College
Boston Red Sox draft pick Marcelo Mayer 'super excited to share
Marcelo Mayer on his draft ranking, 06/29/2021