After two consecutive seasons of late season collapses, Huntington and Hurdle were determined to be aggressive in free agency, adding players and veteran leadership that would stave off another Pittsburgh Pirates collapse in 2013. In the offseason, the team agreed with veteran catcher Russell Martin on a two-year, $17 million deal. Martin, while providing decent offensive numbers, was considered to be a major defensive upgrade over the previous year's platoon of Rod Barajas and Michael McKenry. In 2012, Barajas and McKenry had combined to throw out 19 of 173 baserunners, for a caught stealing percentage of 11%, while Russell Martin held a career caught stealing percentage of 30.25% entering the 2013 season. On December 26, 2012, the Pirates traded established closer Joel Hanrahan and infielder Brock Holt to the Boston Red Sox for reliever Mark Melancon, and prospects Jerry Sands, Iván DeJesús Jr., and Stolmy Pimentel. With this move, the Pirates re-signed setup man Jason Grilli to a two-year deal worth $4.5 million, to become the new Pirates closer. Melancon, who was under-valued after a miserable, injury-riddled 2012 season, replaced Grilli as the Pirates setup man. The trade wound up leaning strongly in favor of the Pirates, as Grilli and Melancon would anchor the so-called "Shark Tank" bullpen as one of the best bullpens in MLB as well as both being selected to the All-Star Game, while Hanrahan wound up only playing in nine games for the Red Sox before suffering an injury to his pitching arm and requiring Tommy John surgery just as his contract was getting ready to expire at the end of the season. Ultimately, Hanrahan would never pitch in the Majors again.