2021 MLB Mock Draft 4.0 — Prospects Live
Watch: Eastlake shortstop Marcelo Mayer discusses his final at-bat and his time with the Titans
Marcelo Mayer wasn't supposed to be there for the Red Sox at No. 4, but the MLB Draft had other plans - The Boston Globe
Jarren Duran to Shane Drohan: Q&A with Red Sox farm director Brian Abraham - The Athletic
2021 MLB Mock Draft - V 6.0 — Prospects Live
Marcelo Mayer, Nick Yorke Boston Red Sox's next longterm double play combo? Watch them take BP, field grounders (videos)
Top Shortstop Prospects
Coveted prep shortstop Marcelo Mayer a two-way star atop Detroit Tigers' wish list
MLB Mock Draft 3.0: Keith Law updates his projection as draft week begins - The Athletic
2023 MLB Draft: The Top 500 Prospects - Future Stars Series
2021 MLB Mock Draft 4.0 — Prospects Live