His four-pitch strikeout of Adrian Gonzalez with a runner on second base to preserve a 6-4 victory June 25 was a career highlight for Hanrahan.
“When people look back at me as a Pirate, that’s one that stands out the most to them,” he said. “It was a fun weekend.”
Hanrahan has never pitched in Fenway Park or even visited the ballpark. But his wife, Kim, grew up a Red Sox fan in the Brockton area and has family in the area.
“It’s a change of pace from the NL Central, but I think it’s going to be great,” Hanrahan said.
Hanrahan will be a free agent after the 2013 season. He is eligible for arbitration and in line to land a one-year contract worth roughly $7 million.
The Red Sox also traded infielder Ivan De Jesus Jr., righthander Stolmy Pimentel, and first baseman/outfielder Jerry Sands to the Pirates.