The "Big Three" are finally all members of the Boston Red Sox. Kristian Campbell, Marcelo Mayer, and Roman Anthony all came to spring training with the hopes of

Marcelo Mayer knows exactly what Roman Anthony felt on Monday when baseball’s No. 1 prospect learned he was getting promoted.

Boston Red Sox infielder Marcelo Mayer shares a heartwarming reaction to Roman Anthony's call-up to the big leagues: "Couldn't wipe the smile off his face."