The Boston Red Sox obtained outfielder Cory Keylor, the Baltimore Orioles’ minor league player of the year last season, for catcher Alberto Castillo on Tuesday.

Boston also optioned pitchers Manny Delcarmen and Craig Hansen to Triple-A Pawtucket and assigned non-roster pitcher Bryan Corey to its minor league camp.

Keylor, 27, hit .294 with 10 homers and 68 RBIs at Double-A Bowie in 2006 and was assigned to Boston’s minor league camp. Castillo, a non-roster player with Boston, was 4-for-13 in 11 spring games.

Delcarmen and Hansen spent substantial portions of last season with the Red Sox. Both had inconsistent exhibition seasons, especially Hansen. Corey pitched well with a 1.50 ERA in 10 appearances.