“The World Cup is not traditionally the tournament for underdogs. The trophy has been lifted by just eight countries — and five of those have won multiple times. But there’s usually enough room for a few Cinderella stories to creep into the knockout phase: Bulgaria (1994), South Korea (2002) and Turkey (2002) were unexpected semifinalists, while Cameroon (1990), Ghana (2010) and Costa Rica (2014) crashed the quarterfinals. At least one country seems to do this every four years. We see three teams that could fit the bill this summer. Before the tournament, each of them had no greater than a 3 percent chance of winning it all, according to FiveThirtyEight’s model, but each has performed well so far and could make a strong run in the knockout rounds.” FiveThirtyEight