Rolison (9-1) worked around a hit to toss 1.2 scoreless innings of relief and earn the win in Saturday's 4-3 victory over the Pirates.
Rolison was the third Chicago pitcher to enter the game, following starter Clay Holmes and Jacob Webb. The lefty tossed his fifth consecutive scoreless outing, which lowered his season ERA to 2.76, and extended his strong run of scooping up wins out of the bullpen. Rolison's nine wins are tied for third among all MLB relievers.