Red Sox prospect Marcelo Mayer gets promoted to Double-A Portland
Red Sox know Mayer is the future Once former Red Sox great Xander Bogaerts left town to join the San
Read MoreRed Sox know Mayer is the future Once former Red Sox great Xander Bogaerts left town to join the San
Read MoreBoston Red Sox top prospect Marcelo Mayer Boston Red Sox top prospect shortstop Marcelo Mayer has been in the system
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