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Jackson Holliday, Red Sox's Marcelo Mayer Headline 2023 MLB Futures Game Rosters, News, Scores, Highlights, Stats, and Rumors
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Marcelo Mayer is the biggest Red Sox prospect to hit Portland in a decade. Catch him while you can. – The Portland Phoenix
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Marcelo Mayer Stats & Scouting Report — College Baseball, MLB Draft, Prospects - Baseball America
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