Marcelo Mayer Headed for 2021 MLB Draft - ITG Next
Marcelo Mayer, top MLB Draft 2021 pick, may be the best Boston Red
2021 MLB Draft - Top 600 Prospects — Prospects Live
Why Tigers Passed On Marcelo Mayer At No. 3 In 2021 MLB Draft
Red Sox prospect Marcelo Mayer continues torrid stretch in minors
2021 MLB Draft - Top 600 Prospects — Prospects Live
Boston Red Sox select Marcelo Mayer from Eastlake HS with the 4th
2021 MLB Draft Scouting Report: SS Marcelo Mayer - Lookout Landing
Red Sox adjust on the fly, take a potential franchise talent in
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2021 MLB Draft - Top 600 Prospects — Prospects Live
Class of 2021 Shortstops Top 3 According to Perfect Game - ITG Next