Victor Caratini hit an RBI double during a decisive seventh inning, helping the Chicago Cubs back Jose Quintana in a close game and beat the San Francisco Giants 2-0 on Tuesday night. A night after losing 2-1 in 11 innings despite a strong start from Kyle Hendricks, the Cubs had enough offense for Quintana (8-6). The left-hander allowed three hits in six scoreless innings to beat the Giants for the first time in his career after going 0-3 with a 5.82 ERA over his first three starts. Addison Russell’s one-out double in the seventh chased Giants starter Derek Holland (5-8). Russell advanced on Sam Dyson’s wild pitch and scored on a bad throw by catcher Nick Hundley trying to get Russell at third. Caratini later doubled. Carl Edwards Jr. struck out the side in order in the seventh, Justin Wilson followed with a perfect eighth and Steve Cishek closed it out for his third save after taking the loss Monday.