Bobby Deerfield starred Al Pacino as automobile racer Bobby Deerfield and Marthe Keller as Lillian Dunkerk .
Bobby Deerfield is a 1977 film based on the novel .
Bobby Deerfield , a 1977 film based on the novel , starred Al Pacino as automobile racer Bobby Deerfield and Marthe Keller as Lillian Dunkerk .