As the 2018 World Cup moves toward its finale, it's clear that soccer is the global sport, with an estimated 500 million people playing regularly, or about 5% of the world’s population. The game is simple: eleven players on one side try to get the ball into the net on the other side. Of the eleven players, only the goalie can use her hands to keep the ball from getting into the net.

Those who are not used to soccer may, reasonably enough, see the goalie as the key to winning. After all the goalie is the last defense, standing between the ball and the net, and in theory a spectacular goalie can stop every shot that comes her way.