 Ramba uchiverenga ndima iyi - Riera akaberekerwa muSantiago, Chile. Somutambi wenhabvu, akatambira Chile muna 1942, 1947uye 1949 Copa Américas. Akatambawo pa 1950 FIFA World Cup, uye akavatungamirira pamusha wavo kuenda kunzvimbo yechitatu mu 1962 World Cup. Muna 1962-63, Riera akatungamira timu yechiPutukezi Benfica kumutambo wePrimeira Liga. Akadzokera kukirabhu muna 1966 uye akavatungamira kune mumwe mukombe. Mumutambo wenhabvu weEngland neRest of the World 1963, Riera akadzidzisa timu yeFIFA World XI; raive timu yekutanga yeFIFA XI munhoroondo yemutambo. MuChile, akasiya nhaka nevadzidzi vevadzidzi vakadai saArturo Salah naManuel Pellegrini, vachisiya tsika uye kuzivikanwa kwebhora reChilean. Riera akafira muguta rake, Santiago, Chile nekuda kwekurwara kwemoyo. 