Miller signed with the Dodgers in 1959 and spent three years in the club's farm system, and then missed the full 1962 and 1963 seasons while performing United States Army service.

After starting 1964 with the Albuquerque Dukes, he was recalled by the Dodgers in June after he went 8–0 with a standout 1.68 earned run average in the Double-A Texas League.

On August 2, he threw his only MLB complete game, a 6–1 triumph over the first-place Philadelphia Phillies at Connie Mack Stadium.

Hurling for the tail-ending Mets, Miller appeared in 32 games (with six starts) over parts of two seasons, but won only one of seven decisions with a poor 5.35 ERA.

He then pitched three more seasons at the Triple-A level before leaving the game at age 32 after a nine-year professional baseball career.