The World Cup, a quadrennial tournament pitting the best national soccer teams against each other for the title of world champion, is one of the most important sports events in the world. This year’s host is Qatar, which in 2010 beat the United States and Japan to win the right to hold the tournament. The tournament just opened on Nov. 20, when Ecuador beat Qatar. That counts as a slow day; over the two weeks that follow, four games will be played on most days. The tournament ends with the final on Dec. 18, which team will win the champion? Let’s guess.