1991 Taça de Portugal Final
As a result of Porto winning the Taça de Portugal , the "Dragões" qualified for the 1991 Supertaça Cândido de Oliveira where they took on 1990–91 Primeira Divisão winners Benfica . 
<triplet> 1991 Supertaça Cândido de Oliveira <subj> 1991 <obj> point in time