How many movies did Sylvester Stallone appear in before Rocky (1976)?

Sylvester Stallone appeared in eight movies before Rocky (1976):

A Party at Kitty and Stud’s (The Italian Stallion) (1970); Bananas (1971); The Lords of Flatbush (1973); Capone (1973); The Prisoner of Second Avenue (1975); Death Race 2000 (1975); Farewell My Lovely (1975); Carquake (1975).