Rotoworld has an update for the first, of many, roster moves to come:
Red Sox optioned LHP Abe Alvarez and 2B Alejandro Machado to Triple- A Pawtucket; optioned RHP Chris Smith to Double-A Portland; optioned RHP Manny Delcarmen, RHP Anibal Sanchez, RHP Luis Mendoza and LHP Juan Cedeno to Single-A Wilmington; assigned SS/2B Kenny Perez and OF Chip Ambres to minor league camp.
Alvarez pitched quite a lot in spring training this year. He pitched a total of five innings and finished camp with a 5.40 earned run average.
The majority of the rest of the group are just prospects that weren't destined to make the club this season. They had their at-bats and a few innings pitched, and will continue to improve down in the minors this season.