Travis Wood pitched two-hit ball for seven innings and the Chicago Cubs got home runs from Welington Castillo and Mike Olt in a 4-2 victory over the Milwaukee Brewers on Sunday.
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.
Castillo's two-run shot gave the Cubs a 2-0 lead in the second. Luis Valbuena scored on Castillo's fifth homer after drawing a walk.
The Cubs extended their lead to 3-0 in the third after Starlin Castro and Valbuena hit back-to-back doubles with two outs.
Olt hit his team-leading ninth homer in the fourth to make it 4-0. He leads NL rookies in home runs.
The Brewers got their first hit on Logan Schafer's one-out double against Wood in the fifth. Two batters later, Rickie Weeks hit a two-run homer to cut the lead to 4-2.
The Brewers had been scoreless for 20 straight innings, since the second inning on Friday.
Milwaukee challenged whether Junior Lake was safe after he stole second in the seventh. Umpires reversed the call after a replay review and Lake was out.
The Brewers loaded the bases with three walks in the first before Khris Davis grounded out to end the inning.