Marcelo Mayer already crown jewel of Red Sox farm system
Red Sox shoot up to fifth in new Baseball America farm system rankings – NBC Sports Boston
Farm Report: Mayer bounces back after slow start at High-A
2023 Preseason Prospect All-Americans
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Category: Rays, Page 2
2023 Preseason Prospect All-Americans
Marcelo Mayer continues climb in MLB's Top 100 prospect rankings
Red Sox top prospect Marcelo Mayer has best game since High-A call-up
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