Milwaukee secured a 4-2 home win over Cincinnati on July 1 at American Family Field, pulling away late after the game was tied early.
Garrett Mitchell drove the Brewers' push, doubling in the fifth, tripling in the seventh and scoring on a wild pitch after earlier being called out at home in a collision play.
Noelvi Marte supplied Cincinnati's biggest hit with his fifth homer in the second inning, but the Reds missed chances, including a sixth-inning double play that erased a run at the plate.
Milwaukee also capitalized on Reds mistakes, with Andrew Abbott's pickoff error and Pierce Johnson's throwing error helping create pressure in a game the Brewers closed out in the ninth.