 After the successful hernia operation in November 1977, Mazzetti got back in shape by returning to São Paulo, Brazil and working out with a semi-professional soccer team in the winter of 1977–78 and returned to Philadelphia in time to attend the open tryouts for the Philadelphia Eagles and the New York Jets.He was invited to go to training camps for both teams, and decided on the Eagles.Mazzetti made it through the entire training camp that summer of 1978, but was released in the last cut when head coach Dick Vermeil decided to go with his veteran, Nick Mike-Mayer.