The statistical boom that has overwhelmed football in the past few years has certainly been a positive one. Never have we had more numerical input at our fingertips and this has enabled more informed discussion at all levels of the game. Whether you are a fan or truly understand the concept of xG, there is no doubt that it is around to stay and although this signifies the first in a new wave of football metrics, it is one of the original set that may need greater focus.
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