Travis Wood pitched two-hit ball for seven innings and the Cubs got home runs from Welington Castillo and Mike Olt in a 4-2 victory over the Milwaukee Brewers on Sunday at Wrigley Field.
Wood (4-4) allowed two runs and struck out seven for the Cubs, who took two of three from the NL Central leaders to win a series for the second time this season. The left-hander walked three, all in the first inning.
Hector Rondon earned his fifth save in five chances after allowing a leadoff double to Ryan Braun in the ninth for Milwaukee's third hit. The Brewers, who began the day with the NL's best record, have scored 11 runs in five games.
Marco Estrada (3-2) gave up four runs and seven hits -- five doubles and two homers -- in five innings. In nine games this season, Estrada has served up 12 home runs, second-most in the majors.