Marcelo Mayer 2022 Bowman's Best Boston Red Sox Top Prospects #TP-8
2023 Bowman Chrome Marcelo Mayer Modern Prospects Insert #MP-19 Boston Red Sox
Red Sox prospect guide: Marcelo Mayer
Red Sox promote top prospect Marcelo Mayer to Portland Sea Dogs
Red Sox No. 1 Prospect Marcelo Mayer Promoted to Portland
Marcelo Mayer - Wikipedia
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Boston Red Sox's Marcelo Mayer ranked No. 9 prospect on MLB Pipeline's Top 100 list; Triston Casas No. 18, Jarren Duran No. 26
Marcelo Mayer 2021 Bowman Draft Chrome DP Auto #CDA-MM Price Guide - Sports Card Investor
Marcelo Mayer 2021 Bowman Draft Chrome DP Auto - Refractor #CDA-MM Price Guide - Sports Card Investor