Isaac Collins hit a three-run homer in the first inning, which accounted for all of Milwaukee's runs.
Brewer starting pitcher Elvin Rodriguez allowed four runs on six hits over 3.2 innings to take the loss. Reliever Tyler Alexander gave up five more runs on seven hits in the final four innings.
Milwaukee (13-11) will play the Chicago White Sox at 3:10 pm. on Wednesday as the exhibition season continues for another week before opening day next Thursday.
