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, and struck out 39 times in the three-game series.
"I don't like the free swinging, but that's just our personality," Roenicke said. "I would much prefer our guys be patient, get a pitch you want to hit, that's ideal. We don't have a lineup like that. Strikeouts go along with that. It's not something we teach and it's not something I like, but that's the personality we have."
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.
NOTES: Brewers OF Carlos Gomez missed the game due to a stomach ailment. He was scratched from the lineup Saturday due to lower back tightness. Gomez said his back was fine Sunday. ... Brewers 3B Aramis Ramirez (left hamstring) said he will do some light jogging Monday or Tuesday. He went on the disabled list Tuesday. ... Brewers RHP Jim Henderson (right shoulder inflammation) threw about 25 pitches in a bullpen session and reported no pain. He said he'll throw a bullpen Tuesday or Wednesday and then possibly go on a rehab assignment. ... Brewers RHP Wily Peralta (4-2, 2.05 ERA) will start against Atlanta on Monday. The Cubs have Monday off before beginning a two-game series at home against the New York Yankees.