First-round pick Marcelo Mayer signs with Red Sox, gets a Fenway
Red Sox Top prospect Marcelo Mayer may get called-up to Boston
Marcelo Mayer, the Red Sox' top prospect, already looks destined
Boston Red Sox view Marcelo Mayer as an 'impact shortstop' as he
Marcelo Mayer is not the only Sox prospect thriving in Portland
Marcelo Mayer among five Red Sox prospects on Baseball America top
Boston Red Sox shortstop Marcelo Mayer (18) before a MiLB Spring
Marcelo Mayer launches go-ahead home run for Red Sox' High-A affiliate
How Marcelo Mayer became a scouting impossible dream come true
Boston Red Sox shortstop Marcelo Mayer (18) before a MiLB Spring
Milliken] Marcelo Mayer (SS), Nick Yorke (2B), and Chase Meidroth
Marcelo Mayer already crown jewel of Red Sox farm system