The best goalkeepers in the world used to be simple to define – but the position has evolved so much in the last decade or so.
30 years ago, custodians used to be the madmen and mavericks of your club, throwing themselves in front of shots and being the last line of defence. Well now, they're so much more: they're the first line of attack, another outfielder in buildup and the position has evolved to new heights.
