 Tancredi began his career with Giulianova, and later also played with Milan and Rimini, before joining Roma.He made 288 Serie A appearances for Roma between 1979 and 1990, winning the "Scudetto" in 1983 and four Coppa Italia titles.In 1987, during a game against Milan at the San Siro, he was hit on the head by a firework thrown by a Milan supporter.