He played for several teams in his home country as well as in Japan, Italy, Germany, Spain and Greece while also representing Brazil at international level, winning the 1999 Copa América.

In July 1992, he was loaned to a Japanese outfit Verdy Kawasaki (J.League Division 1), winning two J-League titles,[4] and returned to Guarani FC two years later, finishing the 1994 Campeonato Brasileiro Série A as the season's top scorer.

[5] Amoroso moved to São Paulo in the summer of 2005 and immediately helped them to the Copa Libertadores, the most prestigious club prize in South America.

[13] In January 2006, after having won the FIFA Club World Championship, finishing the tournament as top scorer,[14] he returned to Italy, signing an 18-month contract for A.C. Milan as a replacement for Christian Vieri, who had transferred to Monaco.

He has also played for Verdy Kawasaki, Flamengo, Udinese, Parma, Borussia Dortmund, Málaga, Milan, Corinthians, Grêmio and Guarani which was his last club.

[5] Amoroso was the top scorer in three national championships, and broke the Bundesliga transfer record when he moved to Borussia Dortmund from Parma in the middle of 2001.

[22] Verdy Kawasaki[4] Flamengo[4] Parma[4] Borussia Dortmund[4] São Paulo[4] Boca Raton FC[4] Brazil[4] Individual