|This article does not cite any sources. (February 2007) (Learn how and when to remove this template message)|
|Date of birth||16 September 1942|
|Place of birth||Orvieto, Italy|
|Date of death||14 April 1990(aged 47)|
|* Senior club appearances and goals counted for the domestic league only.
Born in Orvieto (Umbria), he debuted in Italian Serie A in 1963 with Sampdoria, for which he played in 8 seasons. In 1970, he moved to FC Internazionale, then in need of a replace for Luis Suárez, but Frustalupi disappointed the premises. With the Milanese team he won a scudetto and reached the final of the European Cup in 1972, losing against Ajax.
The following year he was sold to S.S. Lazio. Although he often quarrelled with the club's leading star striker Giorgio Chinaglia, he contributed to make the team one of the strongest in Italy, as shown by the side's scudetto victory in 1974. He also had a successful stint with A.C. Cesena, which under him reached its best result ever in the league, a sixth-place finish in Serie A and the right to play in the UEFA Cup.
In 1977 Frustalupi went to Pistoiese, being a protagonist of the first team's promotion to Serie A. He retired in 1981.
He died in a car accident in 1990.