He played 13 total seasons of professional baseball, two of which were spent in the National League with the Philadelphia Phillies.

Born in Corona, New York, Micelotta made his professional debut in 1947 at the age of 18 and played for two different teams that year.

[4] As the 1954 season began, the Phillies noted that Micelotta had a good chance at winning a major league roster spot due to manager Steve O'Neill being impressed with his fielding and hitting power.

[3] His performance during spring training was regarded highly, and he was noted on a list of promising rookies throughout the majors.

[6] Micelotta played in 13 games for the Phillies that year, served primarily as a pinch runner, and scored two runs in three total at-bats.

[7] He spent the first three months of the season with the Chiefs, then was called back up to the Phillies due to both Granny Hamner and Roy Smalley Jr. getting injured.

During his time with Miami in 1956, Micelotta was known for his defensive plays at the shortstop position, making three good ones in a 6–1 loss against the Havana Cubans in late May.

In 1959, Micelotta played in all 154 games for Birmingham and had a batting average of .239, as well as career highs in stolen bases (10) and strikeouts (117).

[1] The following season, Micelotta was named to the Southern Association All-Star Team alongside fellow Barons Stan Palys and Ron Nischwitz.

[1] Micelotta's comeback season in 1960 resulted in the Detroit Tigers bringing him into spring training as someone who could serve as a utility infielder on the major league roster.