 Complete the following phrase:  A Varese youth product, Penzo began his footballing career at the age of 19, in Serie D, with Borgosesia in 1972, before moving to another Serie D side, Romulea for a season in 1973, where he made a name for himself as a promising striker, due to his eye for goal. In 1974, he was acquired by Roma, as a striker-partner for Pierino Prati; he struggled to gain playing time with the capital club, however, and only made 19 appearances during the 