Pirates acquired RHP Stolmy Pimentel from the Red Sox in the Joel Hanrahan deal.
Pimentel, who turns 23 in February, owns a 4.37 ERA over six seasons in the minors. Once regarded as one of organization's top prospects, his star has faded over the past two seasons. He had a 4.59 ERA and 86/42 K/BB ratio over 115 2/3 innings with Double-A Portland in 2012. The Pirates will hope for a rebound.