May stagnated on the Orioles’ bench in his first three seasons, seeing action as a backup outfielder and an unsuccessful pinch hitter. Acquired by Milwaukee in mid-1970 and made a regular, he had his best season in 1973, with career highs of 25 HR, 93 RBI, 96 runs, and a .303 average. He tied for the league lead in total bases with 295. After a disappointing 1974 season (.226, 10 HR), he was traded to Atlanta with a minor league pitcher in the deal that brought Hank Aaron back to Milwaukee. May had a good year in part-time duty in 1975, hitting 12 HR in just 203 at-bats, but dropped off again in 1976 and was part of the deal that brought 1974 AL MVP Jeff Burroughs from the Rangers.