Anthony Rizzo and Jorge Soler each drove in two runs and Dan Haren picked up his first victory for the Cubs as Chicago knocked off the Milwaukee Brewers 6-3 at Wrigley Field on Tuesday night.
The Cubs won their 5th straight and 11 out of the last 12 games.
Brewers right-hander Taylor Jungmann (6-4) struggled with his command and lasted just 2 2/3 innings. He gave up four runs on five hits with three walks and three strikeouts.
Adam Lind homered and tripled for the Brewers, who have lost 14 of the last 20 games.
The Cubs climbed to within 2 1/2 games of the Pittsburgh Pirates, for the first spot in the National League Wild Card race.
Game two of the series is tonight at Wrigley Field.