Andrew Vaughn hit a three-run home run in his first at-bat with Milwaukee and Freddy Peralta tossed six scoreless innings to pace the Brewers to a 9-1 victory over the visiting Los Angeles Dodgers on Monday in the opener of a three-game series.Peralta (10-4), the Brewers’ lone All-Star selection, scattered five hits, striking out seven and walking one. Aaron Ashby allowed an RBI single to Esteury Ruiz in the eighth.Christian Yelich added a home run for the Brewers, who have won three of four.Dodgers starter Yoshinobu Yamamoto (8-7) failed to get out of the first inning, allowing five runs (three earned) on four hits with two walks. He needed 41 pitches to get two outs.Vaughn, acquired last month in a trade with the White Sox for pitcher Aaron Civale, was called up earlier Monday from Triple-Nashville when Rhys Hoskins went on the 10-day injured list with a sprained left thumb.Vaughn, who had five homers in 48 games with the White Sox, staked the Brewers to a 3-0 lead in a five-run first. Sal Frelick doubled to open and William Contreras walked. With two outs, Vaughn sent a 2-2 pitch 409 feet to left-center.