For the second time in this tournament, 24th-ranked Japan delivered one of the most momentous comebacks in World Cup history by defeating seventh-ranked Spain 2-1. Consequently, four-time champions Germany were eliminated at the group stage of a second straight World Cup, despite a 4-2 victory over Costa Rica. For today's first two matches, Kashef, our artificial intelligence (AI) robot, has analysed more than 200 metrics, including the number of wins, goals scored and FIFA rankings, from matches played over the past century. Prediction: Ghana and Uruguay have met only once before, during the 2010 World Cup in South Africa. After a 1-1 draw between both sides, Ghana went on to lose 2-4 in a penalty shootout.