Numerous factors make up an ideal goalkeeper, so many that it has become debatable that goalkeepers can even be compared with one another.
Sure there's clean sheets, goals against per game, and saves made per game, but all those numbers depend in varying degrees on the quality of defense playing in front of a goalkeeper.
Often we'll quickly call the goalkeepers playing at the top clubs in world "the best," like Iker Casillas, Manuel Neuer and Joe Hart, but are they best because they genuinely are, or because they suit up for the best teams in the world?
One of the ways we can most directly determine the quality of a goalkeeper is by looking at how they perform in the clutch. How successful are they without their defense, when they're forced to try and save a penalty in the game or in a penalty shoot-out?
Less directly, how do these goalkeepers perform at the end of games? Are they prone to conceding sloppy end-of-game goals, or do they rise to the occasion when put under pressure by the opposition?
Here are the 10 goalkeepers who have most proven their reliability in goal when asked to stay strong and protect their goal in the clutch.