Although their father Valentino had played for
Torino F.C., Sandro Mazzola and his brother Ferruccio signed for
Internazionale. Unlike his younger brother, Sandro Mazzola spent his entire career with Inter, scoring 116
Serie A goals for the club in 417 league appearances. He made his Serie A debut under manager
Helenio Herrera during the
1960–61 season, along with many other youngsters, against
rivals Juventus on 10 June 1961, scoring his team's only goal from a penalty in a 9–1 loss; this was his only appearance of the season. Herrera had joined Inter a year earlier, from Spanish side
Barcelona, along with his midfield general
Luis Suárez, who would serve as Inter's main playmaker during the 1960s. Herrera's Inter side during that period also featured
Tarcisio Burgnich and
Giacinto Facchetti as his fullbacks, Brazilian
Jair as his winger,
Mario Corso as the left midfielder,
Armando Picchi as his
sweeper, and Mazzola, who eventually played in the inside-right offensive position under Herrera. Together, they would transform the club into the best team in Italy, Europe, and the world during the 60s, which came to be known as
Grande Inter. They were known for their infamous defensive "
catenaccio" tactics and ability to score from swift and sudden counterattacks. Mazzola won four
Serie A titles with Inter, including two consecutive titles in
1965 and
1966, finishing as the league's
top scorer in the former season, with 17 goals, and narrowly missing out on a treble in the same year. In 1964, Mazzola scored twice to help Inter defeat
Real Madrid in the
1964 European Cup Final to help the club emulate
cross-city rival Milan's feat of the previous season; he finished the tournament as the joint top scorer with seven goals. Mazzola also won two consecutive
Intercontinental Cups with Inter in
1964 and
1965, and reached the 1964–65
Coppa Italia final, as well as managing a third-place finish in the
Coppa Italia during the 1967–68 season; he reached yet another
European Cup final with Inter in
1972, only to lose 2–0 to
Ajax. Mazzola retired from professional football in the summer of 1977, having served as Inter's
captain from 1970 until his retirement. By the end of his career, he had won four Serie A titles (
1963, 1965, 1966 and 1971), two
European Cups (1964 and 1965), two Intercontinental Cups (1964 and 1965), one
European Championship (
1968) and was top scorer during the 1964–65 Serie A season. ==International career==