MLB Mock Draft 2021: Red Sox get Vandy's Jack Leiter at No. 4; Pirates take high school shortstop at No. 1
Q&A with Red Sox prospect Marcelo Mayer
2021 MLB Draft Scouting Report: SS Marcelo Mayer - Lookout Landing
miguel bleis – Blogging the Red Sox
It Sounds Like First-Rounder Marcelo Mayer May Soon Make Pro Debut
2021 MLB Draft profile: SS Marcelo Mayer is the Tigers' top target - Bless You Boys
Final MLB Farm System Rankings of the 2023 Season, News, Scores, Highlights, Stats, and Rumors
Marcelo Mayer of Eastlake High taken fourth in MLB Draft - The San Diego Union-Tribune
MLB Notes: Don't look now, but Rays look like they could be a problem again
2021 MLB Draft Board. The MLB Draft is swiftly approaching…, by Tieran Alexander
Marcelo Mayer out for remainder of 2023 with shoulder injury