Marcelo Mayer Has Been Promoted to AA Portland
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Boston Red Sox prospect watch: Marcelo Mayer erupts : r/redsox
Red Sox Top prospect Marcelo Mayer may get called-up to Boston
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Red Sox No. 1 Prospect Marcelo Mayer Promoted to Portland
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Marcelo Mayer - Wikipedia
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Red Sox shut down top prospect Marcelo Mayer due to shoulder
Sea Dogs' Marcelo Mayer hits first Double-A homer
Marcelo Mayer: Breaking News, Rumors & Highlights
Marcelo Mayer, the Red Sox' top prospect, already looks destined
Marcelo Mayer, Red Sox top prospect, is tearing up the minor leagues
minor leagues – Blogging the Red Sox
Red Sox prospect Marcelo Mayer opens up about season-ending