Sergio Gonella's debut in the Serie A was in 1965 and he was promoted UEFA referee in 1972. He lead two important finals: of the 1976 European Championships and the 1978 World Cup.
In 1975 Sergio refereed the SuperCup final Dinamo Kiev vs. Bayer Munchen.
In 1976 the Italian banker officiated the Euro1976 final between Checoslavakia and West Germany.
In 1978 Sergio took charge of the WC 1978 final between Argentina and The Netherlands. His highest merit internationally. See Did-You-Know section for details.
Also in 1978 Gonella finished his career after 175 matches in the Serie A.
From 1998 to 2000 he was president of the Italian Referee Federation.