As a young, slick-fielding Cincinnati shortstop, Miller could not supplant Billy Myers (who hit for a better average), and he was traded to the Braves in 1938. A broken leg cut short his 1939 season, but he returned in 1940 to bat a lifetime-best .276. He led league shortstops in fielding each year from 1940 through 1943 and again in 1945. Reacquired by the Reds after the 1942 season, he was their regular shortstop through 1947, when he topped the NL with 38 doubles and reached career highs of 19 HR and 87 RBI. A six-time All-Star shortstop, he played second base for the Phillies in 1949.