CHICAGO -- Carlos Gomez broke a scoreless tie with a run-scoring single in the ninth as the Milwaukee Brewers scored five unanswered runs to beat the Chicago Cubs 5-0 Monday night.
Gomez's single to center scored Jean Segura with what proved to be the game-winner off Pedro Strop (1-1). The reliever pitched scoreless ball over his first 12 appearances as a Cub, covering 10 2/3 innings, before he was charged with five runs Monday.
Brewers right-hander Brandon Kintzler (3-0) worked the eighth and earned the victory.
Segura, who walked to open the Brewers ninth, sprinted home and easily and beat a throw from center fielder David DeJesus while Jonathan Lucroy advanced to second.
The Brewers then loaded the bases with no outs. Strop struck out Juan Francisco but gave up a double to Jeff Bianchi that scored Lucroy and Gomez and marked the end for Strop.
Rickie Weeks made it 5-0 with a bloop hit to the right field corner off Blake Parker that scored Caleb Gindl and Bianchi.
The loss snapped a three-game Chicago winning streak. The Cubs returned to Wrigley Field for the first time in two weeks, beginning a four-games-in-three-days series with the Brewers.
Monday's starters -- the Brewers' Kyle Lohse and the Cubs' Jeff Samardzija -- each had scoreless efforts but weren't around for the end.
Lohse worked six innings, allowed five hits and struck out six while walking three.
Samardzija allowed just three hits, struck out seven and walked two in seven innings.
Tuesday's day-night doubleheader features the Brewers' Yovani Gallardo (8-9) against the Cubs' Carlos Villanueva (2-7) in the first game, with Jake Arrieta making his Chicago debut in the nightcap against a Milwaukee pitcher to be determined.
NOTES: When he enters a game, Cubs RHP Eduardo Sanchez will become the 45th player to appear with the team this season, eight shy of the franchise record set in 2012. ... Chicago topped the National League with 336 extra-base hits entering Monday, but they had just one against the Brewers. Colorado was second with 319. ... Samardzija entered Monday as one of only seven pitchers with nine losses despite a sub-.400 ERA. ... Ex-Cubs pitcher Frank Castillo, 44, drowned in a lake near his Arizona home Sunday. He was drafted by the Cubs and played seven seasons in Chicago and also played for five other teams. He had a record of 82-104 with a 4.56 ERA. ... Lucroy has seven home runs in July, the third-best single-month total for a Brewers catcher. He ranks third in the majors in homers this month behind Yankees DH Alfonso Soriano (nine) and Rangers 3B Adrian Beltre (eight).