Tom Dettore had a short career in MLB. He appeared in 68 games with an overall record of 8 wins and 11 losses. After 12 games as a Pirate in 1973, he was traded to the Cubs for Paul Popovich in April 1974. Dettore served as a spot starter and reliever in 1974 and 1975. After 4 games and a 10.29 ERA, Dettore was released by the Cubs in late April 1976. Although he signed as a free agent with the Padres shortly after being released by the Cubs, he did not play in the majors. He played in the minor leagues through 1977 before ending his career.