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Baseball America — College Baseball, MLB Draft, Prospects - Baseball America
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2023 MLB Draft: The Top 400 Prospects - Future Stars Series
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Marcelo Mayer, No. 4 Draft pick, signs with Red Sox
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2022 Baseball America Staff Draft Version 3.0 — College Baseball, MLB Draft, Prospects - Baseball America
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Top Red Sox prospect Marcelo Mayer is tearing up the minors and drawing rave reviews - The Boston Globe
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Updated Top 100 Prospect List Ahead of MLB Draft 2023, News, Scores, Highlights, Stats, and Rumors
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Baseball America — College Baseball, MLB Draft, Prospects - Baseball America
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2023 MLB Draft: Baseball America Staff Draft V 2.0 — College Baseball, MLB Draft, Prospects - Baseball America
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Where Red Sox Prospects Rank In New Baseball America Top 100 List
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MLB Draft 2022: See every player the Red Sox picked
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Could Red Sox take exciting shortstop prospect Marcelo Mayer with No. 4 pick in 2021 MLB Draft? – Blogging the Red Sox
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farm system – Blogging the Red Sox
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Baseball America — College Baseball, MLB Draft, Prospects - Baseball America