The Pirates and free agent reliever Jason Grilli have agreed to terms on a two-year contract pending a physical, according to a source.
Fox Sports' Ken Rosenthal first reported the agreement.
Grilli, 36, provides another option for the back of the Pirates' bullpen in the event that the team trades closer Joel Hanrahan, who will become a free agent after the 2013 season.
Grilli struck out 90 batters in 58 2/3 innings this season as the Pirates' setup man. In parts of two seasons with the Pirates, Grilli struck out 127 in 91 1/3 innings with a 2.76 ERA.
The Pirates signed Grilli in July 2011. He was pitching in Class AAA for the Philadelphia Phillies organization at the time after missing the entire 2010 season because of injury.
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