BOSTON -- The Red Sox added a major piece to their bullpen on Tuesday with the acquisition of Eric Gagne from the Texas Rangers in exchange for left-handed pitcher Kason Gabbard and Minor League outfielders David Murphy and Engel Beltre.
Gagne waived the no-trade clause in his contract to make the deal official. He'll serve as Jonathan Papelbon's setup man and close on days that Papelbon is getting rest.

Gagne, who was a target of the Red Sox last winter, is having a strong year (2-0, 2.16 ERA and 16 saves) for the Rangers. Because of injuries, Gagne pitched in just 16 games in a span of two seasons entering this year. However, he regained his health and his dominance in Texas.

Gabbard was scheduled to pitch for the Red Sox on Wednesday night. Instead, Tim Wakefield will take his place.