- Height 6' 0", Weight 175 lb.
Nick Colosi began his umpiring career in the Florida State League in 1962. He moved on to the South Atlantic League in 1963, Southern League 1964-1965, and International League 1966-1968. Colosi then was a National League umpire from September 1968 to 1982. He was an umpire in three NLCS, two World Series, and two All Star Games.
He suffered a heart attack while umpiring a game in 1979, which cost him most of that season, but he returned to work three more full seasons before retiring.
- Lee Gutkind: The Best Seat in Baseball, But You Have to Stand! The Game as Umpires See It, Southern Illinois University Press, Carbondale, IL, 1999 (originally published in 1975). ISBN 978-0809321957