 Complete the following phrase:  The tournament also saw the return of 1930 champions Uruguay, who had boycotted the previous two World Cups. For political reasons, Eastern European countries such as Hungary, the Soviet Union and Czechoslovakia did not enter. Title-holder Italy did take part, despite the Superga air disaster of 1949 in which the entire Grande Torino team many of whom were national team players were killed. The 1950 World Cup was the only tournament not to stage a final tie, replacing knockout rounds with two group phases. The last match of the second group phase, however, is sometimes referred to as a final, as the group standings meant the winners would be the overall winners. Uruguay were surprise victors over hosts Brazil with a final score of 21 the game would later be known as 