<prompt> Mwaka wakatevera, Riva akaita Serie A yake yekutanga kuCagliari musi wa13 Gunyana, 1964, mukurasikirwa ne2 × 1 neRoma, uye akabatsirawo kirabhu kudzivirira kudzikiswa, achitungamira timu kunzvimbo yechitanhatu yakagadzikana mutafura, achihwina zvibodzwa zvipfumbamwe zvinokurudzira mumitambo makumi matatu nemaviri aine makore makumi maviri. Izvi zvakateverwa nenzvimbo yegumi neimwe, yechitanhatu, uye yechipfumbamwe muligi pakati pa1965 na1968, nepo Riva akapedzawo semutambi wepamusoro weligi kekutanga mumwaka wa1966-67 aine zvibodzwa gumi nesere, sezvo kirabhu yakatanga kuvaka chinzvimbo chinogona kuhwina mukwikwidzi wavo nyeredzi: Riva akakwezva vatambi venhabvu vanoverengeka kuCagliari, uye timu panguva ino yaive nevatambi vakakosha vakaita saEnrico Albertosi, Roberto Boninsegna, Ricciotti Greatti, Comunardo Niccolai, Mario Martiradonna, Mario Brugnera, Pierluigi Cera, naNené. Riva akabva abatsira Cagliari kusvika kunzvimbo yechipiri muCoppa Italia, kuseri kweRoma, uye muligi, mapoinzi mana kuseri kweFiorentina, mumwaka wa1968-69.  <response>: , kuhwina capocannoniere zita kechipiri aine zvibodzwa makumi maviri mumitambo makumi maviri nemapfumbamwe; Cagliari anga achitungamira muligi kusvika musi wechi21 wemutambo, apo kurasikirwa kumba kuJuventus kwakaita kuti timu ipe mutungamiri wayo. 