Josh Harrison doubled twice for the Pirates and Sean Rodriguez hit his first home run of the season. Pittsburgh rallied from a three-run deficit to manage a split of the four-game series.
Radhames Liz (1-1) picked up his first major league win since 2008 with two innings of shutout relief. Mark Melancon worked a perfect ninth for his third save.
Chris Denorfia and Starlin Castro each had two hits for the Cubs. Rookie second baseman Addison Russell doubled in a run for the first RBI of his career.
Brian Schlitter (0-2) gave up a double to Harrison with one out in the seventh. Harrison scored on Polanco's single to left off Coke.
