Marcelo Mayer is the biggest Red Sox prospect to hit Portland in a
Red Sox prospect Marcelo Mayer's custom cleats at Futures Game - ESPN
Marcelo Mayer crushes a pair of homers
Watch: Marcelo Mayer launches his first Double-A home run
San Diegans Marcelo Mayer, Spencer Jones focus on the present as
Red Sox place top prospect Marcelo Mayer on injured list - The
Marcelo Mayer records first hits for Double-A Portland
Marcelo Mayer crushes a pair of homers
How Red Sox No. 1 prospect fared in Double-A debut after promotion
Meet Marcelo Mayer, Eastlake grad and MLB prospect with 'more pop
Marcelo Mayer's solo homer, 07/03/2023
Red Sox promote top prospect Marcelo Mayer to Portland Sea Dogs