Red Sox top prospect Marcelo Mayer takes liftoff amid struggles
Marcelo Mayer, the Red Sox' top prospect, already looks destined for the big leagues - The Boston Globe
Farm system rankings: Position players 10-1
For Semien, attending Cal was fate
Boston Red Sox prospect Marcelo Mayer ranked No. 22, compared to Corey Seager, Christian Yelich on ESPN list
Marcelo Mayer is not the only Sox prospect thriving in Portland
Red Sox Prospect Marcelo Mayer Called Up To Portland Seadogs
Farm system rankings: Position players 10-1
nick yorke – Blogging the Red Sox
Red Sox: Marcelo Mayer's prospect ranking shows he was the right draft choice
Farm system rankings: Position players 10-1
Portland McClelland Miscellanea
The Road to The Show™: Boston Red Sox shortstop Marcelo Mayer