Rookie infielder Addison Russell collected three hits, including a pair of doubles, and Kyle Schwarber reached base three times to back starter Kyle Hendricks, who was impressive yet-again for the Cubs.
Chicago (61-48) clinched the series with the win on Saturday and will look for the sweep on Sunday behind ace right-hander Jake Arrieta.
As for Hendricks, the sophomore right-hander allowed three earned on five hits, pitching into the sixth – doing more than his share to get the Cubs their ninth win in their last 10 contests.