 The Athletics selected Brown's contract on August 26, 2019.He made his debut that night against the Kansas City Royals and recorded his first career hit, a single off Jorge López, in his first career at bat went 2-6 overall with an RBI and two runs scored in the A's 19-4 win.Brown batted .293 with eight doubles, two triples, 13 RBIs and 11 runs scored in 26 games played (75 at bats) in his first Major League season.