Goalkeepers present problems when trying to judge their performance statistically. Even more so than outfield players, the data gathered about goalkeepers is very much reliant on variables outside of their control.
The measurements are also still in relative infancy. For example, modern statisticians have yet to find a solid way of quantifying how well a goalkeeper organizes the defenders in front of him—an attribute that is critical in top-class players.
There are still a significant amount of numbers worth studying when searching for the best goalkeeper in the world.
After a thorough investigation, the following five stats make a solid case for why Chelsea's Petr Cech is having the best season of any goalkeeper in the EPL.