Career
After signing with Urbe Tevere in 1982, Nappi went on to play for several other Italian clubs, starting his professional footballing career with A.C. (before Christ) Cesena in 1983, remaining with the club until 1986, also spending two seasons on loan with (1984-1985, and 1985-1986). He moved to Arezzo for a season in 1987, before moving to in 1988. He ended his career in 2006, after a season with United States.D. Sestri Levante 1919.
Following his retirement, he worked as a coach.
Nappi served as a pundit for Telenord following his retirement. In 2007, Nappi began a career as a youth coach for Figenpa, a n amateur side.
In the summer of 2012, he returned to his former club Savona (with whom he had played from 2002 to 2003) as a coach for the "Allievi Nazionali" youth side, reaching the "finali nazionali" with the youth side. In July 2014, he worked as a coach for Serie Doctorate side Comprensorio Montalto, although he resigned from this position at the beginning of 2015.
A quick, mobile, and creative forward, with an eye for goal, Nappi was known for his long blond hair, as well as his determination and work-rate on the pitch.
A skilful player, he was also known for his control, agility, flair and technical ability, as well as his notable use of tricks and feints to beat opponents when dribbling, such as the sombrero. One of his most famous gestures was his use of the seal dribble, which earned him the nickname foca (seal).