Marcelo Mayer (/ˈmaɪ.ər/ MY-ər; born December 12, 2002) is an American professional baseball shortstop in the Boston Red Sox organization.
[14][15] Mayer reported to the club’s spring training base at Fort Myers, Florida, soon after signing.
[16] He made his professional debut for the Florida Complex League Red Sox on August 5,[17] drawing three walks.
[23] Over 91 games between both teams, he slashed .280/.399/.489 with 13 home runs, 53 RBIs, and 30 doubles along with going 17-for-17 in stolen base attempts.
[26] After batting .290/.366/.890 in 35 games at Greenville in 2023, Mayer was promoted to the Double-A Portland Sea Dogs in late May.
[28] Mayer began the 2024 season with Portland, ranked as the Red Sox' top minor-league prospect by Baseball America.
[29] In August, he was promoted to the Triple-A Worcester Red Sox, along with fellow-prospects Roman Anthony and Kyle Teel.
[30] Mayer became the third player from Eastlake High School to be selected in the first round of an MLB draft, joining Adrian Gonzalez (2000) and Keoni Cavaco (2019).