MacKenzie was 8-10 with a 4.80 ERA in 128 relief appearances over six seasons with the Milwaukee Braves (1960-61), the Mets (1962-63), St. Louis (1963), San Francisco (1964) and Houston (1965).
MacKenzie was 8-10 with a 4.80 ERA in 128 relief appearances over six seasons with the Milwaukee Braves (1960-61), the Mets (1962-63), St. Louis (1963), San Francisco (1964) and Houston (1965).