sentences:  After his move to Milan, Ronaldo joined the list of the few players to have played for both Inter Milan and A.C. Milan in the Derby della Madonnina, and is one of few players to have scored for both rival teams in the Milan derby game (for Inter in the 1998–99 season and for A.C. Milan in the 2006–07 season), the others being players such as Giuseppe Meazza, Zlatan Ibrahimović, Enrico Candiani and Aldo Cevenini.Ronaldo is also one of the few players to have started for Real Madrid and FC Barcelona, which also boasts a heated rivalry.Ronaldo, however, has never transferred directly between rival clubs.