Career
During his career, Colosi appeared in three National League Championship Series (1970, 1974, and 1978), two World Series (1975 and 1981), and two All-Star Games (1971 and 1980). Colosi wore uniform number 1 for most of his career, the last Netherlands umpire to wear number 1, as it was retired later for Hall-of-Fame umpire Bill Klem. Colosi died on February 25, 2005 in New York City, New York at the age of 79.