Sergio Clerici was born on May 25, 1941 in Sao Paulo, Brazil. He spent his youth career with Portuguesa.

He would go on to have a great career in Italy and in 1978 he was the leading goalscorer in the National Soccer League.

1961-1967 Lecco

In January 1961 Sergio joined Lecco in Italy. He stayed with Lecco until the end of the 1966-67 season. He scored 59 goals in 201 league games.

1963-64 Figurina Calciatore Panini

1967-1968 Bologna

During the 1967-1968 season Sergio played for Bologna and scored four goals in 22 league games.

1968-1969 Atalanta

Sergio played for Atalanta Bergamo in the 1968-69 season. He scored nine goals in 26 league games.

1969-1971 Hellas Verona

1971-1973 Fiorentina

Sergio scored 20 goals in 52 league games for Fiorentina.

1972-73 Figurina Panini Sticker

1973-1975 Napoli

Sergio scored 29 goals in 57 league games for Napoli.

1974-75 Figurina Panini Sticker

1975-1977 Bologna

Sergio scored 15 goals in 53 league games for Bologna.

1977-1978 Lazio

Sergio played in eleven games and scored one goal for Lazio.

1978 Montreal Castors

After finishing his career with Lazio Sergio joined Montreal Castors in the National Soccer League. He made his debut for the Castors in their opening game of the 1978 season. On Sunday May 7 the Castors defeated Toronto Panhellenic 2-1 in front of 4,000 fans at Claude Robillard Stadium.

On May 17 Montreal Castors defeated Ottawa Tigers 1-0 at Robillard Stadium, Sergio Clerici scored the Castors goal on a penalty.

On May 28 Montreal Castors won 5-0 over Toronto Falcons and took hold of first place in the NSL. By June 6 Sergio had scored four goals in five games.

Montreal Castors tightened their grip on the first place when they beat Ottawa Tigers 4-0 at Lansdowne Park in Ottawa on June 14. Sergio Clerici scored one of the goals.

Advertisement in the Windsor Star newspaper highlighting the appearance of Sergio Clerici.

After winning the league championship the Castors decided not to take part in the play-offs or the NSL Cup. Sergio Clerici ended the season as the leading goal scorer in the 1978 National Soccer League with 19 goals.