Michelotti began his career in football as a
goalkeeper, before becoming a referee in
Serie A in 1967. In 1973, Michelotti was appointed a
FIFA referee. At club level, Michelotti officiated the
1975 Coppa Italia Final between
Fiorentina and
Milan in Rome on 28 June; the former side won the match 3–2. He was also in charge of refereeing the
second leg of the 1979 UEFA Cup Final between
Borussia Mönchengladbach and
Red Star Belgrade, on 23 May, which ended in a 1–0 home victory to the former club, which in turn saw the German side claim the title 2–1 on aggregate. The following season, he also officiated the
1980 Coppa Italia Final between
Roma and
Torino in Rome on 17 May, which ended in 3–2 penalty shoot-out victory to the former team following a 0–0 draw after extra-time. He officiated the third Coppa Italia final of his career in the
following year, against the same two opponents, the second leg of a 1–1 draw on 17 June, in Turin; following a 2–2 aggregate draw after extra-time, Roma once again prevailed on penalties, winning 4–2. At international level, in 1976, Michelotti was appointed a referee for the
1976 Summer Olympics, where he officiated two matches. Four years later, Michelotti was appointed a referee for
UEFA Euro 1980, where he officiated a
group stage match between
Czechoslovakia and
West Germany. Michelotti retired from officiating in 1981. ==Personal life and death==